公开(公告)号：US20240331646A1

公开(公告)日：2024-10-03

申请号：US18743176

申请日：2024-06-14

申请人： X-SIGNAL INTEGRATED CO., LTD.

发明人： Guanou YANG ,  Huijiao JIN

IPC分类号： G09G3/34 ,  G01R19/25

CPC分类号： G09G3/3406 ,  G01R19/25

摘要： An LED backlight driving circuit with a voltage regulating unit is provided. The LED backlight driving circuit includes a power supply unit, an LED string, an ADC voltage detection circuit, and a driving controller; the ADC voltage detection circuit is used to detect a voltage value Vled of a negative terminal of a LED string, and the ADC voltage detection circuit includes an ADC sampling module that converts the measured voltage value Vled at the negative terminal of the LED string into a voltage numerical code; for the numerical code of the negative terminal voltage value Vled measured by the ADC sampling module, a first threshold V1 and a second threshold V2 are set.

公开(公告)号：US20240304155A1

公开(公告)日：2024-09-12

申请号：US17769766

申请日：2021-05-28

申请人： BOE Technology Group Co., Ltd.

发明人： Xinle WANG ,  Wenchao HAN ,  Yifan SONG ,  Zhaohui MENG ,  Lianghao ZHANG ,  Yilin FENG ,  Zhengri LIN ,  Mingming WANG ,  Wei SUN ,  Rui LIU ,  Xin DUAN ,  Jing LIU ,  Wanzhi CHEN

IPC分类号： G09G3/34 ,  G02F1/1335 ,  G06F3/041 ,  G09G3/36

CPC分类号： G09G3/3406 ,  G02F1/133612 ,  G09G3/36 ,  G06F3/0412 ,  G06F3/0416 ,  G09G2320/0626 ,  G09G2354/00 ,  G09G2360/144 ,  G09G2370/10

摘要： Disclosed are a brightness control apparatus and method, and a display apparatus. The brightness control apparatus includes an optical detection circuit and an integrated circuit chip connected with the optical detection circuit. The optical detection circuit includes at least one transistor, configured to detect a light intensity of light to be detected corresponding to an environment where a display panel is located, and generate an electrical signal corresponding to the light intensity of the light to be detected.

公开(公告)号：US12087242B2

公开(公告)日：2024-09-10

申请号：US18376831

申请日：2023-10-04

申请人： InnoLux Corporation

发明人： Yu-Chia Huang ,  Yuan-Lin Wu ,  Kuan-Feng Lee ,  Tsung-Han Tsai

IPC分类号： G09G3/34 ,  G02F1/1333 ,  G02F1/1335 ,  G02F1/13363 ,  G02F1/1339 ,  G02F1/1343 ,  G09G5/10

CPC分类号： G09G3/3406 ,  G02F1/133305 ,  G02F1/133514 ,  G02F1/1339 ,  G02F1/134345 ,  G09G5/10 ,  G02F1/13363 ,  G02F2201/56 ,  G02F2202/36 ,  G02F2413/01 ,  G09G2320/0626 ,  G09G2320/0666

摘要： An electronic device includes a display panel having a display surface. The display surface includes a first region and a second region arranged along a first direction. The display panel outputs a first light in the first region and a second light in the second region. The first light has a first normal brightness in a first orthogonal direction perpendicular to the first direction and a first oblique brightness in a first inclined direction. The first orthogonal direction and the first inclined direction form a first acute included angle. The second light has a second normal brightness in a second orthogonal direction and a second oblique brightness in a second inclined direction. The second orthogonal direction and the second inclined direction form a second acute included angle. The first oblique brightness and the second oblique brightness are different.

公开(公告)号：US12087240B2

公开(公告)日：2024-09-10

申请号：US16349608

申请日：2018-11-13

申请人： HKC Corporation Limited

发明人： Bin Qiu

IPC分类号： G09G3/34 ,  G09G3/36 ,  H03M1/66

CPC分类号： G09G3/3406 ,  G09G3/3685 ,  H03M1/66 ,  G09G2310/027 ,  G09G2320/0252 ,  G09G2320/0653 ,  G09G2330/021

摘要： The present application discloses a display panel driving method and a display panel thereof. The display panel driving method includes: a timing control chip performs initial configurations; the timing control chip generates a control signal; and an output enable circuit receives the control signal to control picture display of a display panel.

公开(公告)号：US20240265884A1

公开(公告)日：2024-08-08

申请号：US18621591

申请日：2024-03-29

申请人： GOOGLE LLC

发明人： Sang Young Youn ,  Sun-il Chang ,  Wonjae Choi ,  Sangmoo Choi

IPC分类号： G09G3/34

CPC分类号： G09G3/3406 ,  G09G2320/0252 ,  G09G2320/064 ,  G09G2340/0435

摘要： PWM-frame rate misalignment is mitigated through implementation of a discrete variable refresh rate (VRR) scheme. A target frame rate is limited to a frame rate selected from only those frame rates that facilitate alignment of each frame period to a specified edge of a PWM cycle of a brightness control signal of a display panel. This alignment results in each frame period at the selected frame rate starting at a same point in a corresponding PWM cycle and ending at a same point in a corresponding PWM cycle to help ensure a constant effective duty cycle across each successive frame period, which in turn mitigates perception of flicker that otherwise would arise. Further, the discrete VRR scheme can employ a compensation mode for compensating for the delay in rendering or otherwise obtaining a frame for display so as to maintain a consistent duty cycle in the brightness control signal.

公开(公告)号：US12051378B2

公开(公告)日：2024-07-30

申请号：US18005760

申请日：2021-07-13

申请人： Illions Limited

发明人： James Moore

IPC分类号： G09G3/34 ,  G09G3/3208 ,  G09G3/36

CPC分类号： G09G3/3406 ,  G09G3/3208 ,  G09G3/36 ,  G09G2320/0666

摘要： A method of operating a liquid crystal display (LCD) device is disclosed. The device comprises an LCD screen held by a housing, a camera positioned within the housing, and a backlight arranged to illuminate the LCD screen. The method comprises displaying a first image on the LCD screen by setting a first set of elements of the LCD screen to transmit light and illuminating the LCD screen with the backlight. After switching off the backlight, a second set of elements is set to transmit light with colour filters off, and an image is captured with the camera. After capturing the image, a second image is displayed on the LCD screen by setting a third set of elements to transmit light and illuminating the LCD screen with the backlight.

公开(公告)号：US20240249689A1

公开(公告)日：2024-07-25

申请号：US18412755

申请日：2024-01-15

申请人： Lenovo (Singapore) Pte. Ltd.

发明人： Kazuhiro Kosugi ,  Masashi Nishio

IPC分类号： G09G3/34 ,  G06V40/16

CPC分类号： G09G3/3406 ,  G06V40/161 ,  G09G2320/0626

摘要： An information processing apparatus includes a ranging sensor which divides a predetermined detection range into a plurality of measurement units to measure the distance to an object for each measurement unit; a memory which temporarily stores distance information indicative of the distance for each measurement unit measured by the ranging sensor; and a processor which executes processing based on the distance information for each measurement unit. The processor detects a range of a person present in the detection range based on the distance information for each measurement unit, detects a range of a face of the person in the range of the person detected in the detection range based on the distance information for each measurement unit, and detects the orientation of the face based on distance information in the range of the face among pieces of the distance information each piece for each measurement unit.

公开(公告)号：US12046213B2

公开(公告)日：2024-07-23

申请号：US17869000

申请日：2022-07-20

申请人： Japan Display Inc.

发明人： Kazunari Tomizawa ,  Tadafumi Ozaki

IPC分类号： G09G3/34 ,  G02F1/13357 ,  G09G3/36

CPC分类号： G09G3/3677 ,  G02F1/1336 ,  G09G3/3406 ,  G09G3/342 ,  G09G3/3426 ,  G09G2310/024 ,  G09G2310/08 ,  G09G2320/0252

摘要： A display device includes: a display panel with pixel rows; a light source device having light emission regions; and a controller configured to control light emission of the light emission regions. A second period is shorter than a first period. The first period is a period from a drive timing of one or more pixel rows that are driven first to a drive timing of one or more other pixel rows that are driven last. The second period is a period from a light emission timing of one or more light emission regions that emit light first to a light emission timing of one or more other light emission regions that emit light last. The light emission timing of the one or more light emission regions that emit light first is different from the light emission timing of the one or more other light emission regions that emit light last.

公开(公告)号：US12027127B2

公开(公告)日：2024-07-02

申请号：US18265651

申请日：2021-10-19

申请人： BEIJING XIANXIN TECHNOLOGY CO., LTD

发明人： Kiwon Lee ,  Youngjin Lim ,  Chenghui Yan

IPC分类号： G09G3/34 ,  G09G3/36

CPC分类号： G09G3/3406 ,  G09G3/36 ,  G09G2320/041 ,  G09G2320/0626 ,  G09G2330/021

摘要： A control method for a backlight circuit includes: obtaining a plurality of pieces of dimming data in a preset period of time; determining total accumulated electric energy received by the backlight source according to the plurality of pieces of dimming data in the preset period of time; and generating a first voltage control signal when the total accumulated electric energy reaches a preset electric energy threshold. The dimming data is used to control a backlight source to emit light. The preset period of time is from an initial moment of continuous light emission of the backlight source to a current moment. The first voltage control signal is used to reduce the working voltage of the backlight source. When the total accumulated electric energy reaches the preset electric energy threshold, reducing the working voltage of the backlight source does not affect a light emitting brightness of the backlight source.

公开(公告)号：US20240212635A1

公开(公告)日：2024-06-27

申请号：US18288874

申请日：2022-12-26

申请人： Honor Device Co., Ltd.

发明人： Zhe LI ,  Yusen WANG ,  Xiao LUO

IPC分类号： G09G3/34

CPC分类号： G09G3/3406 ,  G09G2320/0606 ,  G09G2320/0613 ,  G09G2320/0626 ,  G09G2320/08 ,  G09G2354/00 ,  G09G2360/144

摘要： This application provides a method for adjusting display screen brightness, an electronic device, and a storage medium. The method includes: setting display screen brightness in response to an automatic brightness setting instruction; adjusting the display screen brightness in response to a brightness setting instruction generated by manually adjusting brightness by a user; determining, when a display screen is on again after the display screen is off, whether a mechanism of clearing the display screen brightness manually adjusted is triggered; if the mechanism of clearing the display screen brightness manually adjusted is triggered, setting the display screen brightness again in response to the automatic brightness setting instruction; determining, in response to an operation of manually adjusting the display screen brightness again, whether the operation of manually adjusting the display screen brightness again is the same as a previous operation of manually adjusting the display screen brightness.