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公开(公告)号：EP3839935A1
公开(公告)日：2021-06-23
申请号：EP18935066.3
申请日：2018-09-28
发明人： LIU, Chun Yen , WAI, Dustin Yuk Lun
IPC分类号： G09G3/36
摘要： Embodiments of this application relate to the field of display technologies, and provide a gate driving circuit, a method for controlling a gate driving circuit, and a mobile terminal, to resolve a problem that a complete image cannot be displayed after a flexible display screen is folded. The gate driving circuit includes a first driving group, a first connection controller, and a second driving group. The first driving group is configured to receive a start signal output by a first signal end of a display driver. A first end of the first connection controller is configured to receive an active signal output by the first driving group. A second end of the first connection controller is configured to receive a cascade gating signal output by a second signal end of the display driver. A third end of the first connection controller is configured to receive a split-screen gating signal output by a third signal end of the display driver. A fourth end of the first connection controller is configured to receive a split-screen display signal output by a fourth signal end of the display driver. The second driving group is configured to receive an active signal output by a fifth end of the first connection controller.
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2.发明公开
公开(公告)号：EP4068256A1
公开(公告)日：2022-10-05
申请号：EP20913810.6
申请日：2020-12-18
发明人： WAI, Dustin Yuk Lun , WANG, Kun , WANG, Anli , WANG, Liang , CHU, Chiaching , SUN, Jialiang
IPC分类号： G09G3/20
摘要： Embodiments of this application provide a display driver, a control method, a display control circuit system, and an electronic device, and relate to the field of electronics and communications technologies, to reduce, in a command mode, a probability that a screen stalling phenomenon occurs during display of a dynamic image and reduce power consumption of a display. A timing control unit in the display driver sends one first pulse of a tearing effect signal every a first preset time T1. The timing control unit sends S second pulses of the tearing effect signal when a transceiver unit does not receive an N th frame of display data within a preset time, where the S second pulses of the tearing effect signal are used to prolong duration of the N th frame by a second preset time T2, and indicate a host to output the generated N th frame of display data in an (N+1) th frame based on an S th second pulse of the tearing effect signal. The processing unit receives the N th frame of display data in the (N+1) th frame, and controls, based on the N th frame of display data, the display to display an N th frame of image.
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公开(公告)号：EP3770899A1
公开(公告)日：2021-01-27
申请号：EP19800575.3
申请日：2019-04-25
IPC分类号： G09G5/10
摘要： This application provides a method and an apparatus for controlling brightness of a display, and a terminal device. The method for controlling brightness of a display in this application includes the following steps: first determining a first brightness value corresponding to the display at a current brightness adjustment level; then determining, based on a preset gamma correction lookup table, a first input grayscale value corresponding to the first brightness value, where the gamma correction lookup table is a gamma correction relationship between a brightness value of the display and an initial input grayscale value of the display at a specified brightness adjustment level; and finally controlling a display brightness value of the display based on the first input grayscale value. According to this application, accurate brightness can be displayed in a brightness adjustment process, and relatively few hardware resources are occupied.
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4.发明公开
公开(公告)号：EP3920169A1
公开(公告)日：2021-12-08
申请号：EP20759315.3
申请日：2020-02-18
发明人： WAI, Dustin Yuk Lun , WANG, Kun , WANG, Anli , WANG, Liang , CHU, Chiaching
IPC分类号： G09G3/20
摘要： An electronic device and a method for displaying an image in a multi display drive circuit system are provided. A host controller (101) splits a to-be-displayed image into at least two sub images, where each sub image and an adjacent sub image thereof include at least one column of overlapping image pixels. The host controller (101) sends the at least two sub images to at least two display drive circuits (102 and 103), so that the at least two display drive circuits (102 and 103) can jointly drive a display screen (104) to display the to-be-displayed image in an SPR manner. Alternatively, the host controller (101) outputs at least two sub images rendered in an SPR pixel format to at least two display drive circuits (102 and 103), so that the at least two display drive circuits (102 and 103) can jointly drive a display screen (104) to display the to-be-displayed image in an SPR manner. The multiple display drive circuits (102 and 103) do not need to establish a data channel to share pixel data, thereby avoiding problems such as EPC area increase, EMI, and ESD.
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5.发明公开
公开(公告)号：EP3905233A1
公开(公告)日：2021-11-03
申请号：EP20759443.3
申请日：2020-02-19
发明人： WAI, Dustin Yuk Lun , LIU, Chun Yen , CHU, Chiaching , LI, Xia
IPC分类号： G09G3/32
摘要： A display driving system, a method for driving a display screen, and an electronic device are provided to improve design flexibility of the display driving system. The electronic device includes: a display screen (130), where the display screen (130) includes a first display region (11) and a second display region (12); and a display driving system (120), including a first EM signal output end configured to send a first EM signal to the display screen (130), where the display driving system (120) further includes a second EM signal output end configured to send a second EM signal to the display screen (130), where the first EM signal is used to control the first display region (11) to display an image in a first time period, and the second EM signal is used to control the second display region (12) not to display an image in the first time period.
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公开(公告)号：EP4083987A1
公开(公告)日：2022-11-02
申请号：EP20921122.6
申请日：2020-11-12
IPC分类号： G09G3/32
摘要： Embodiments of this application provide a display module and an electronic device, and relate to the field of display technologies, to reduce a probability of a display flicker occurring when a display displays an image at a low refresh rate. A display module includes a display, a display driver circuit, and at least one driver group; the display includes M rows of sub pixels arranged in a matrix form; each driver group includes M gating circuits; an N th gating circuit is configured to: receive a first initial voltage Vinit1 and a second initial voltage Vinit2 from the display driver circuit, output the second initial voltage Vinit2 to a second electrode of a first reset transistor and a first electrode of a voltage modulation transistor, and output the first initial voltage Vinit1 to the second electrode of the first reset transistor and the first electrode of the voltage modulation transistor; and the first initial voltage Vinit1 meets at least one of the following conditions: Vinit1>Vinit2 and Vinit1>(ELVSS+Voled), where ELVSS is a voltage output by a second power voltage input end, and Voled is a voltage drop of a light-emitting component.
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公开(公告)号：EP3889951A1
公开(公告)日：2021-10-06
申请号：EP19902260.9
申请日：2019-12-04
发明人： LIU, Chun Yen , WAI, Dustin Yuk Lun
IPC分类号： G09G3/3258
摘要： This application provides a display, a mobile terminal, and a control method thereof. The display includes a display driver (03), a first pixel array (41), and a second pixel array (42). A first voltage input end (112) of a pixel circuit in a first sub-pixel (20a) is electrically connected to a first signal end (113) of the display driver (03), to receive a first supply voltage output by the first signal end (113). A second voltage input end (122) is electrically connected to a second signal end (123) of the display driver (03), to receive a second supply voltage output by the second signal end (123). A third voltage input end (132) of a pixel circuit in a second sub-pixel (20b) is electrically connected to a third signal end (133) of the display driver (03), to receive a third supply voltage output by the third signal end (133). A fourth voltage input end (142) is electrically connected to the second signal end (123) of the display driver (03), to receive the second supply voltage output by the second signal end (123). A voltage value of the third supply voltage is different from a voltage value of the first supply voltage.
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8.发明公开
公开(公告)号：EP3996080A1
公开(公告)日：2022-05-11
申请号：EP20847474.2
申请日：2020-07-21
IPC分类号： G09G3/3208
摘要： A display module and a control method thereof, a display drive circuit, and an electronic device are disclosed, and relate to the field of display technologies, to mitigate a display flicker phenomenon when a display (10) displays an image at a low refresh rate. The display module includes a display (10), a display driver, and at least one driver group. The display (10) includes M rows of sub-pixels (20) arranged in a matrix form. Each sub-pixel (20) includes a driving transistor M4, a first reset transistor M1, a first capacitor Cst, and a light emitting device L. Each driver group includes M selecting circuits (301). The N th selecting circuit (301) is coupled to a second node of a first reset transistor M1 in the N th row of sub-pixels (20). The selecting circuit (301) is configured to output a second initial voltage Vint2 to the second node of the first reset transistor M1 when a pixel circuit (201) is in a reset phase and a data voltage writing phase, and is configured to output a first initial voltage Vint1 to the second node of the first reset transistor M1 when the pixel circuit (201) is in a light emitting phase, where |Vint2|>|Vint1|.
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9.发明公开
公开(公告)号：EP3920172A1
公开(公告)日：2021-12-08
申请号：EP20759437.5
申请日：2020-02-18
发明人： WAI, Dustin Yuk Lun , LIU, Chun Yen
IPC分类号： G09G3/3266
摘要： This application provides a display driver circuit, a display module, a method for driving a display, and an electronic device, which can improve display performance of a display. The electronic device includes: a display, including a first display area and a second display area; a main controller, configured to send a first clock signal separately to a first display driver circuit and a second display driver circuit; the first display driver circuit, configured to receive the first clock signal, where the first display driver circuit is further configured to output a first GOA clock signal to the display, where the first GOA clock signal is generated based on the first clock signal; and the second display driver circuit, configured to receive the first clock signal, where the second display driver circuit is further configured to output a second GOA clock signal to the display, where the second GOA clock signal is generated based on the first clock signal.
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