CN113257189A - Unlocking method of optical under-screen fingerprint mobile device - Google Patents
Unlocking method of optical under-screen fingerprint mobile device Download PDFInfo
- Publication number
- CN113257189A CN113257189A CN202010085029.XA CN202010085029A CN113257189A CN 113257189 A CN113257189 A CN 113257189A CN 202010085029 A CN202010085029 A CN 202010085029A CN 113257189 A CN113257189 A CN 113257189A
- Authority
- CN
- China
- Prior art keywords
- gamma
- brightness
- reference voltage
- mode
- mobile device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V40/00—Recognition of biometric, human-related or animal-related patterns in image or video data
- G06V40/10—Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
- G06V40/12—Fingerprints or palmprints
- G06V40/13—Sensors therefor
- G06V40/1318—Sensors therefor using electro-optical elements or layers, e.g. electroluminescent sensing
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0673—Adjustment of display parameters for control of gamma adjustment, e.g. selecting another gamma curve
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Multimedia (AREA)
- Computer Hardware Design (AREA)
- Image Input (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The invention discloses an unlocking method of an optical under-screen fingerprint mobile device, which comprises the following steps: judging whether to enter a constant Display mode (Always On Display AOD); when entering a constant display mode, setting the duty cycle of the brightness adjusting signal to be fully open, and adjusting GAMMA to be low-brightness GAMMA; judging whether entering a high brightness mode; and adjusting GAMMA to high brightness GAMMA when entering high brightness mode.
Description
Technical Field
The present invention relates to a display driving technology, and more particularly, to an unlocking method for an optical underscreen fingerprint mobile device capable of avoiding screen flicker.
Background
FIG. 1 is a schematic diagram illustrating a panel operation process of an optical underscreen fingerprint mobile device according to the prior art when unlocking. Referring to fig. 1, an Active Matrix Organic Light Emitting Diode (OLED) panel is adopted for a typical optical screen with finger-unlocked function. When the active matrix organic light emitting diode panel enters an Always On Display (AOD mode), the brightness is adjusted to a lower brightness, as shown in fig. 1, a register (register) of 51H is adjusted to 03F, and a power supply (OLED power) of the active matrix organic light emitting diode panel is supplied by a driver IC (driver IC), so as to achieve the purpose of power saving.
When in the constant display Mode, if a touch event occurs, representing that a finger touches the panel, at this time, the smart phone Application Processor (AP) will make the display panel exit the constant display Mode first and return to the normal display Mode (normal Mode), because of the characteristic relationship of the optical fingerprint sensor, the Brightness of the fingerprint unlock region must reach the Brightness of the High Brightness Mode (HBM), at this time, the smart phone Application Processor (AP) will make the next command to make the active matrix organic light emitting diode panel reach the Brightness of the High Brightness Mode, and make the duty cycle (emission duty) of the Brightness adjustment signal adjusted back to 100%.
FIG. 2 is a diagram illustrating a relationship between a brightness level of a panel and an adjustment mode when an optical underscreen fingerprint mobile device is unlocked according to the prior art. Referring to fig. 2, the shift of the brightness used in the constant display mode is low, and in order to achieve the power saving effect, the duty cycle (emission duty) of the brightness adjustment signal is adjusted to achieve the purpose of dimming. In this example, the value of [03F ] is taken as an example, but since the brightness is adjusted to a lower level in the normal constant display mode, the value falls within the range of duty (emission duty) adjustment of the brightness adjustment signal. Since the duty cycle of the luminance adjustment signal is not 100% in the case of low luminance, it may be only 50%. Therefore, when a touch event occurs and the display mode returns to a normal display mode or even a high-brightness mode, the duty cycle of the brightness adjustment signal is forced to be adjusted to 100%, and the background changes in brightness along with the duty cycle of the brightness adjustment signal being adjusted from 50% to 100%, thereby causing the problem of screen flashing. That is, the brightness variation caused by the adjustment of duty cycle may cause a phenomenon that the screen flickers.
Disclosure of Invention
The present invention provides an unlocking method for an optical under-screen fingerprint mobile device capable of preventing a panel from flashing, which maintains a constant brightness signal and adjusts the luminous flux by GAMMA, thereby achieving the requirement of identifying and unlocking the mobile device by using the optical under-screen fingerprint without affecting the display effect of the panel, for example, without flashing the screen.
In view of the above, the present invention provides an unlocking method for an optical underscreen fingerprint mobile device, including the following steps: judging whether to enter a constant Display mode (Always On Display AOD); when entering a constant display mode, setting the duty cycle of the brightness adjusting signal to be in a full-on state, and adjusting GAMMA to be low-brightness GAMMA; judging whether entering a high brightness mode; and adjusting GAMMA to high brightness GAMMA when entering high brightness mode. Setting the duty cycle to the fully on state includes setting the value to approximately 100%.
According to the unlocking method of the optical underscreen fingerprint mobile device in the preferred embodiment of the present invention, the determining whether to enter a high brightness mode includes the following steps: judging whether a preset block is touched by a finger or not; and when the preset block is touched by a finger in the constant display mode, entering a high-brightness mode, and adjusting GAMMA to high-brightness GAMMA for fingerprint identification.
According to a preferred embodiment of the present invention, the method for unlocking an optical underscreen fingerprint mobile device, wherein adjusting GAMMA to a low brightness GAMMA comprises: adjusting the highest reference voltage VGMP and the lowest reference voltage VGSP of the GAMMA slope to a minimum range. In a preferred embodiment, the maximum reference voltage VGMP is 6V, and the minimum reference voltage VGSP is 4.5V.
According to the unlocking method of the optical below-screen fingerprint mobile device in the preferred embodiment of the present invention, the adjusting the GAMMA to the high brightness GAMMA includes the following steps: adjusting the highest reference voltage VGMP and the lowest reference voltage VGSP of the GAMMA slope to a maximum range. In a preferred embodiment, the maximum reference voltage VGMP is 6V, and the minimum reference voltage VGSP is 3V.
The spirit of the present invention is to set the duty cycle of the brightness adjustment signal to be fully open and adjust GAMMA to low brightness GAMMA in the constant display mode, so that even if the finger print recognition under the screen requires the high brightness mode, it is not necessary to additionally adjust the duty cycle of the brightness adjustment signal, and therefore, the screen does not flicker due to the change of brightness.
In order to make the aforementioned and other objects, features and advantages of the invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
FIG. 1 is a schematic diagram of a panel operation process for unlocking an optical underscreen fingerprint mobile device in the prior art.
FIG. 2 is a diagram illustrating a relationship between brightness levels and adjustment modes of a panel unlocked by an optical underscreen fingerprint mobile device according to the prior art.
FIG. 3 is a flowchart illustrating an unlocking method of an optical underscreen fingerprint mobile device according to a preferred embodiment of the invention.
Fig. 4 is a schematic diagram illustrating a GAMMA adjustment method of an unlocking method of an optical underscreen fingerprint mobile device according to a preferred embodiment of the invention.
FIG. 5 is a diagram of an optical underscreen fingerprint mobile device according to a preferred embodiment of the invention.
Description of the symbols:
s301 to S305: the steps of the method for unlocking an optical underscreen fingerprint mobile device in accordance with a preferred embodiment of the present invention
Detailed Description
FIG. 3 is a flowchart illustrating an unlocking method for an optical underscreen fingerprint mobile device according to a preferred embodiment of the invention. Referring to fig. 3, in this embodiment, still an Active Matrix Organic Light Emitting Diode (AMOLED) display is taken as an example, however, it should be understood by those skilled in the art that a Passive Matrix Organic Light Emitting Diode (PMOLED) display can also be implemented, and then the invention can also be implemented if there is a Light-permeable display panel, and therefore, the invention is not limited thereto. The unlocking method of the optical type under-screen fingerprint mobile device comprises the following steps:
step S300: the steps of the embodiments of the present invention begin. For convenience of explanation of the present invention, it is assumed that the active matrix organic light emitting diode display at this time is in a normal mode.
Step S301: whether the normal Display mode enters the constant Display mode (AOD mode) or not is judged, wherein the mode can be also called as a never extinguishing mode. For example, the smart mobile device may be configured with a smart holster, and when the holster is covered, the smart mobile device determines whether the holster is closed by sensing a sensing device on the smart holster, thereby determining whether to enter a constant display mode. When it is determined that the AMOLED display enters the constant display mode from the normal display mode, step S302 is executed
Step S302: enter a constant display mode. When the active matrix organic light emitting diode display enters the constant display mode from the normal display mode, for example, the embodiment adjusts the duty cycle (emission duty) of the brightness adjustment signal (emission signal) to be fully on, and gives an independent set of constant display mode GAMMA setting values to make the brightness reach the brightness required by the constant display mode. For example, the register 51H is adjusted such that the duty cycle of the brightness adjustment signal is set to 100%. In addition, fig. 5 below will explain how to set the GAMMA setting value in the constant display mode. From the step S302, the duty cycle of the brightness adjustment signal in the constant display mode of the present embodiment still maintains the set full-on value. The duty cycle may also be referred to as a light emitting period or a light emitting duty ratio.
Step S303: it is determined whether a High Brightness Mode (HBM) is entered. Generally, in the constant display mode, if a touch occurs, the mobile device needs to enter the high brightness mode to unlock the mobile device.
Step S304: enter a High Brightness Mode (HBM). When the high brightness mode is entered, GAMMA is adjusted to high brightness GAMMA for fingerprint identification unlocking. At this time, the duty cycle of the brightness adjusting signal is still the set full-on value, and no conversion is needed, so the background brightness is not changed due to the duty cycle of the brightness adjusting signal, and the screen is not flickered. After entering the high brightness, the fingerprint identification procedure is executed to unlock the mobile device.
In the step S304, when the touch is detected, the display enters the high brightness mode, that is, the display enters the High Brightness Mode (HBM) from the constant display mode for unlocking. However, it should be understood by those skilled in the art that in step S304 of the embodiment of the present invention, the display may enter the normal display mode from the constant display mode, and then trigger the high brightness mode, so that the display enters the high brightness mode from the normal display mode.
Since the fingerprint identification is only required to be performed in a part of the blocks in some mobile device designs, in another preferred embodiment of the present invention, the step S303 only needs to determine whether a predetermined block is touched by a finger. In the step S304, the preset block is only required to enter the high brightness mode, and the GAMMA is adjusted to the high brightness GAMMA for fingerprint identification.
Fig. 4 is a schematic diagram illustrating a GAMMA adjustment method of an unlocking method of an optical underscreen fingerprint mobile device according to a preferred embodiment of the invention. Referring to fig. 4, since the constant display mode and the normal display mode have different brightness and the duty cycle of the brightness adjustment signal is maintained at 100%, the brightness portion needs to be adjusted by using GAMMA. In the circuit, a reference voltage for determining a GAMMA slope is generally used as a GAMMA setting value, and the reference voltage is divided into a maximum reference voltage VGMP and a minimum reference voltage VGSP. In the general display mode, the highest reference voltage VGMP is 6V, and the lowest reference voltage VGSP is 3V; in the constant display mode (low luminance), the maximum reference voltage VGMP is also 6V, whereas the minimum reference voltage VGSP is set to, for example, 4.5V.
Therefore, the required brightness can be achieved by adjusting the lowest reference voltage VGSP. For example, in the constant display mode, the highest reference voltage VGMP and the lowest reference voltage VGSP which determine the GAMMA slope are adjusted to a minimum range (e.g., 6V to 4.5V); in the high brightness mode, the maximum reference voltage VGMP and the minimum reference voltage VGSP which determine the GAMMA slope are adjusted to a maximum range. However, it should be understood by those skilled in the art that adjusting the maximum reference voltage VGMP or the minimum reference voltage VGSP to achieve different brightness is not a sole means, and the invention is not limited thereto.
Table 1 below is a table of corresponding unit times with duty cycles (emissions) on at different resolutions. Referring to table 1, although the duty cycle of the luma adjustment signal is set to 100% as an example in the above embodiments, it should be understood by those skilled in the art that the full on duty cycle of the luma adjustment signal may be limited by the resolution and the goa (gate on array) timing design, and the duty cycle of the luma adjustment signal does not necessarily reach 100%. In general, the actual value of the duty cycle at full opening may be about 99. X%, e.g., 99.7%. Taking the following table 1 as an example, when FHD + (Full HD) displays a panel, the off time of the duty cycle is 6 units of time, the on time of the duty cycle is 2364 units of time, and the converted actual duty cycle is 99.7%. On the other hand, in the case of the WQHD + (Wide Quad HD) display panel, the off time of the duty cycle is 8 units of time, the on time of the duty cycle is 3144 units of time, and the actual duty cycle converted is also 99.7%. It can be seen that the value is approximately 100% when the duty cycle is fully open.
TABLE 1
| OFF | ON | Duty | |
| FHD+ | 6 | 2364 | 99.7％ |
| WQHD+ | 8 | 3144 | 99.7％ |
FIG. 5 is a diagram of an optical underscreen fingerprint mobile device according to a preferred embodiment of the invention. Referring to fig. 5, 501 is a constant display mode display area, and 502 is an under-screen fingerprint identification area. After entering the lock screen, the mobile device enters a constant display mode according to the setting, and the constant display mode can display information such as current time, date, electric quantity and the like according to the setting of a user. When a user wants to unlock the device, the user touches the fingerprint identification area 502 under the screen, at this time, the screen is set to the maximum brightness, and the fingerprint identification area 502 under the screen is lightened to provide light rays for the optical fingerprint sensor to perform fingerprint identification, and if the identification is completed and the authentication is successful, the unlocking is completed.
In summary, the spirit of the present invention is to set the duty cycle of the brightness adjustment signal to be fully On and adjust GAMMA to be low brightness GAMMA in the Always On Display (AOD mode), so that even if the optical underscreen fingerprint recognition requires the high brightness mode, it is not necessary to additionally adjust the duty cycle of the brightness adjustment signal, and therefore, the screen does not flicker due to the change of brightness.
The detailed description of the preferred embodiments is provided only for the convenience of illustrating the technical contents of the present invention, and the present invention is not limited to the above-described embodiments in a narrow sense, and various modifications made without departing from the spirit of the present invention and the scope of the following claims are included in the scope of the present invention. Therefore, the protection scope of the present invention should be determined by the appended claims.
Claims (7)
1. An unlocking method of an optical type under-screen fingerprint mobile device is characterized by comprising the following steps:
judging whether entering a constant display mode;
when entering the constant display mode, setting the duty cycle of a brightness adjustment signal to be fully open, and adjusting GAMMA to low brightness GAMMA;
judging whether entering a high brightness mode; and
when entering the high brightness mode, GAMMA is adjusted to high brightness GAMMA.
2. The method of claim 1, wherein the duty cycle of the brightness adjustment signal is set to be fully on, which means that the duty cycle is set to be close to 100%.
3. The method of claim 1, wherein determining whether to enter a high brightness mode comprises:
judging whether a preset block is touched by a finger or not; and
when the constant display mode is adopted and the preset block is touched by a finger, the high-brightness mode is entered, and the GAMMA is adjusted to the high-brightness GAMMA for fingerprint identification.
4. The method of unlocking an optical underscreen fingerprint mobile device of claim 1, wherein adjusting GAMMA to low brightness GAMMA comprises:
adjusting the highest reference voltage VGMP and the lowest reference voltage VGSP of the GAMMA slope to a minimum range.
5. The method of claim 4, wherein the maximum reference voltage VGMP is 6V and the minimum reference voltage VGSP is 4.5V.
6. The method of unlocking an optical underscreen fingerprint mobile device of claim 1, wherein adjusting GAMMA to high brightness GAMMA comprises:
adjusting the highest reference voltage VGMP and the lowest reference voltage VGSP of the GAMMA slope to a maximum range.
7. The method of claim 6, wherein the maximum reference voltage VGMP is 6V and the minimum reference voltage VGSP is 3V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010085029.XA CN113257189A (en) | 2020-02-10 | 2020-02-10 | Unlocking method of optical under-screen fingerprint mobile device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010085029.XA CN113257189A (en) | 2020-02-10 | 2020-02-10 | Unlocking method of optical under-screen fingerprint mobile device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113257189A true CN113257189A (en) | 2021-08-13 |
Family
ID=77220179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010085029.XA Pending CN113257189A (en) | 2020-02-10 | 2020-02-10 | Unlocking method of optical under-screen fingerprint mobile device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113257189A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023069064A1 (en) * | 2021-10-18 | 2023-04-27 | Google Llc | Brightness control for under-display sensor |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108520241A (en) * | 2018-04-11 | 2018-09-11 | 深圳市万普拉斯科技有限公司 | Fingerprint collecting method, device based on optical finger print technology and user terminal |
| CN108664895A (en) * | 2018-04-12 | 2018-10-16 | 厦门天马微电子有限公司 | Display device and its fingerprint identification method |
| CN108766975A (en) * | 2018-04-28 | 2018-11-06 | 上海天马有机发光显示技术有限公司 | A kind of display panel and electronic equipment |
| CN108806603A (en) * | 2018-06-29 | 2018-11-13 | 上海天马有机发光显示技术有限公司 | A kind of organic light emitting display panel and its driving method, organic light-emitting display device |
| CN108830190A (en) * | 2018-05-30 | 2018-11-16 | 昆山国显光电有限公司 | A kind of display equipment and its control method |
| CN109543574A (en) * | 2018-11-08 | 2019-03-29 | Oppo广东移动通信有限公司 | Fingerprint collecting method and relevant device |
| CN109545132A (en) * | 2018-11-26 | 2019-03-29 | 昆山国显光电有限公司 | Shield body display methods, display screen and electronic equipment |
| CN109712593A (en) * | 2019-02-25 | 2019-05-03 | 京东方科技集团股份有限公司 | A kind of brightness control method and terminal device |
| CN110276326A (en) * | 2019-06-27 | 2019-09-24 | 云谷（固安）科技有限公司 | A kind of display equipment and display methods |
| CN110582807A (en) * | 2017-05-01 | 2019-12-17 | 微软技术许可有限责任公司 | Local highlight mode |
-
2020
- 2020-02-10 CN CN202010085029.XA patent/CN113257189A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110582807A (en) * | 2017-05-01 | 2019-12-17 | 微软技术许可有限责任公司 | Local highlight mode |
| CN108520241A (en) * | 2018-04-11 | 2018-09-11 | 深圳市万普拉斯科技有限公司 | Fingerprint collecting method, device based on optical finger print technology and user terminal |
| CN108664895A (en) * | 2018-04-12 | 2018-10-16 | 厦门天马微电子有限公司 | Display device and its fingerprint identification method |
| CN108766975A (en) * | 2018-04-28 | 2018-11-06 | 上海天马有机发光显示技术有限公司 | A kind of display panel and electronic equipment |
| CN108830190A (en) * | 2018-05-30 | 2018-11-16 | 昆山国显光电有限公司 | A kind of display equipment and its control method |
| CN108806603A (en) * | 2018-06-29 | 2018-11-13 | 上海天马有机发光显示技术有限公司 | A kind of organic light emitting display panel and its driving method, organic light-emitting display device |
| CN109543574A (en) * | 2018-11-08 | 2019-03-29 | Oppo广东移动通信有限公司 | Fingerprint collecting method and relevant device |
| CN109545132A (en) * | 2018-11-26 | 2019-03-29 | 昆山国显光电有限公司 | Shield body display methods, display screen and electronic equipment |
| CN109712593A (en) * | 2019-02-25 | 2019-05-03 | 京东方科技集团股份有限公司 | A kind of brightness control method and terminal device |
| CN110276326A (en) * | 2019-06-27 | 2019-09-24 | 云谷（固安）科技有限公司 | A kind of display equipment and display methods |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023069064A1 (en) * | 2021-10-18 | 2023-04-27 | Google Llc | Brightness control for under-display sensor |
| US11908415B2 (en) | 2021-10-18 | 2024-02-20 | Google Llc | Brightness control for under-display sensor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9740046B2 (en) | Method and apparatus to provide a lower power user interface on an LCD panel through localized backlight control | |
| US8194031B2 (en) | Backlight control of electronic device | |
| US20140176469A1 (en) | Apparatus and method for controlling dim state | |
| KR101442028B1 (en) | Character highlighting control apparatus, display apparatus, highlighting display control method, and recording medium | |
| KR20210022131A (en) | Display panel luminance calibration method, and display panel luminance calibration device | |
| US20010026285A1 (en) | Display system with latent image reduction | |
| CN101866208A (en) | Electronic device and power saving method thereof | |
| US20230120335A1 (en) | Pixel circuits and driving methods thereof, display panels and display apparatuses | |
| KR102545677B1 (en) | A monitor apparatus for saving the power by analyzing the logged histogram of the designated block information and the method for controling the same | |
| TWI740371B (en) | Unlocking method for mobile device with in-display fingerprint | |
| KR20200001709A (en) | Touch display device | |
| KR102444260B1 (en) | A monitor apparatus for saving the power by recognizing the application through the digitized color temperature and the method for controling the same | |
| CN113257189A (en) | Unlocking method of optical under-screen fingerprint mobile device | |
| CN109949752B (en) | Regional display brightness adjusting method, playing terminal and storage medium | |
| KR102578304B1 (en) | Multiple gamma control technologies for display panels | |
| US9218762B2 (en) | Dimming techniques for emissive displays | |
| CN109979414A (en) | Brightness adjusting method, device, mobile terminal and computer readable storage medium | |
| JP2010072103A (en) | Image display, image display method, image display processing program, and computer readable recording medium with image display processing program recorded thereon | |
| US20110216102A1 (en) | Method and apparatus for reducing power consumption in electronic device | |
| CN110534063B (en) | Backlight source adjusting method for regional dimming and display device | |
| CN112447132A (en) | Terminal device, display control method, display control device, and computer-readable storage medium | |
| CN100428329C (en) | Information display | |
| JP2003108076A (en) | Organic electroluminescence display device and portable telephone set | |
| CN111477169A (en) | Brightness control method for display mode switching on O L ED panel | |
| KR20070060469A (en) | Liquid crystal display device and driving method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |