# US 11,114,061 B2 · Light-emission control signal generating device and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,114,061 B2 - Document ID: US11114061B2 - Status: Granted - Kind: B2 - Application number: 16/623,609 - Filed: 2019-05-24 - Published: 2021-05-13 - Granted: 2021-09-07 - Earliest claimed: 2018-05-31 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Xueling Gao; Kuanjun Peng; Chengchung Yang; Zhiqiang Xu; Wei Qin; Tieshi Wang; Xiaolong Li; Shengnan Li; Wanpeng Teng - Web page: https://patentgrep.com/patent/US11114061B2 ## CPC - G09G 3/3225: using an active matrix - G09G 5/10: Intensity circuits - G09G 3/3266: Details of drivers for scan electrodes - G09G 3/3275: Details of drivers for data electrodes - G09G 2320/0261: in the context of movement of objects on the screen or movement of the observer relative to the screen - G09G 2320/0646: Modulation of illumination source brightness and image signal correlated to each other - G09G 2320/103: Detection of image changes, e.g. determination of an index representative of the image change - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract The present disclosure relates to a light-emission control signal generating device and a display device. The light-emission control signal generating device includes: a state detection circuit configured to detect whether a current frame is a static frame or a dynamic frame and output an indication signal indicating the static frame or the dynamic frame; and a plurality of light emission control signal generation circuits; wherein the plurality of light emission control signal generation circuits are divided into a plurality of blocks, and individual blocks are input with different light emission enable signals based on the indication signal to generate light emission control signals. ## Claims ### Claim 1 A light emission control signal generation device, comprising: a state detection circuit configured to detect whether a current frame is a static frame or a dynamic frame and output an indication signal indicating the static frame or the dynamic frame; and a plurality of light emission control signal generation circuits, wherein: the plurality of light emission control signal generation circuits are divided into a plurality of blocks, and individual ones of the blocks are input with different light emission enable signals based on the indication signal to generate light emission control signals; two adjacent blocks are connected through a switching circuit configured to input a first light emission enable signal or a second light emission enable signal to one of the two adjacent blocks based on the indication signal; and a light emission enable portion of the second light emission enable signal is shorter than a light emission enable portion of the first light emission enable signal. ### Claim 2 (depends on 1) The device according to claim 1, wherein the switching circuit comprises: a first switching transistor, wherein a gate of the first switching transistor is input with the indication signal, a source of the first switching transistor is connected to one of the two adjacent blocks, and a drain of the first switching transistor is connected to the other one of the two adjacent blocks; and a second switching transistor, wherein a gate of the second switching transistor is input with the indication signal, a source of the second switching transistor is input with the second light emission enable signal, and a drain of the second switching transistor is connected to the other one of the two adjacent blocks. ### Claim 3 (depends on 2) The device according to claim 2, wherein: if the indication signal indicates that the current frame is the dynamic frame, the first switching transistor is turned off and the second switching transistor is turned on; and if the indication signal indicates that the current frame is the static frame, the first switching transistor is turned on and the second switching transistor is turned off. ### Claim 4 (depends on 2) The device according to claim 2, wherein the first switching transistor is a P-type transistor and the second switching transistor is an N-type transistor. ### Claim 5 A light emission control signal generation device, comprising: a state detection circuit configured to detect whether a current frame is a static frame or a dynamic frame and output an indication signal indicating the static frame or the dynamic frame; and a plurality of light emission control signal generation circuits, wherein: the plurality of light emission control signal generation circuits are divided into a plurality of blocks, and individual ones of the blocks are input with different light emission enable signals based on the indication signal to generate light emission control signals; there is no physical connection between an output end of one of the plurality of blocks and an input end of another one of the plurality of blocks; in response to the indication signal indicating that a frame corresponding to one of the plurality of blocks is the dynamic frame, the one of the plurality of blocks is input with a modulated driving signal; in response to the indication signal indicating that a frame corresponding to one of the plurality of blocks is the static frame, the one of the plurality of blocks is input with a normal driving signal; and a light emission enable portion of the modulated driving signal is shorter than a light emission enable portion of the normal driving signal. ### Claim 6 (depends on 5) The device according to claim 5, wherein a level of a data signal in a charging phase corresponding to the dynamic frame is higher than a level of a data signal in a charging phase corresponding to the static frame. ### Claim 7 A display panel, comprising: a pixel array formed by a plurality of rows of pixel units and light emission control signal generation circuits corresponding to individual rows of pixel units, wherein: the pixel array comprises a plurality of partitions, each partition comprising a plurality of pixel unit groups, each pixel unit group comprising a part of pixel units in a row of pixel units; each pixel unit group comprises a first control switching transistor and a second control switching transistor; a gate of the first control switching transistor is input with a first control signal, a source of the first control switching transistor is input with a light emission control signal, and a drain of the first control switching transistor is connected to pixel units in each pixel unit group; a gate of the second control switching transistor is input with a second control signal, a source of the second control switching transistor is connected to the pixel units in each pixel unit group, and a drain of the second control switching transistor is input with a modulated light emission control signal; and a duty ratio of the modulated light emission control signal is smaller than a duty ratio of the light emission control signal. ### Claim 8 A display device, comprising: a light emission control signal generation device, wherein light emission control signal generation device comprises: a state detection circuit configured to detect whether a current frame is a static frame or a dynamic frame and output an indication signal indicating the static frame or the dynamic frame; and a plurality of light emission control signal generation circuits, wherein: the plurality of light emission control signal generation circuits are divided into a plurality of blocks, and individual ones of the blocks are input with different light emission enable signals based on the indication signal to generate light emission control signals; two adjacent blocks are connected through a switching circuit; the switching circuit is configured to input a first light emission enable signal or a second light emission enable signal to one of the two adjacent blocks based on the indication signal; and a light emission enable portion of the second light emission enable signal is shorter than a light emission enable portion of the first light emission enable signal. ### Claim 9 (depends on 8) The display device according to claim 8, wherein the switching circuit comprises: a first switching transistor, wherein a gate of the first switching transistor is input with the indication signal, a source of the first switching transistor is connected to one of the two adjacent blocks, and a drain of the first switching transistor is connected to the other one of the two adjacent blocks; and a second switching transistor, wherein a gate of the second switching transistor is input with the indication signal, a source of the second switching transistor is input with the second light emission enable signal, and a drain of the second switching transistor is connected to the other one of the two adjacent blocks. ### Claim 10 (depends on 9) The display device according to claim 9, wherein: if the indication signal indicates that the current frame is the dynamic frame, the first switching transistor is turned off and the second switching transistor is turned on; and if the indication signal indicates that the current frame is the static frame, the first switching transistor is turned on and the second switching transistor is turned off. ### Claim 11 (depends on 9) The display device according to claim 9, wherein the first switching transistor is a P-type transistor and the second switching transistor is an N-type transistor. ### Claim 12 A display device, comprising: a light emission control signal generation device, wherein light emission control signal generation device comprises: a state detection circuit configured to detect whether a current frame is a static frame or a dynamic frame and output an indication signal indicating the static frame or the dynamic frame; and a plurality of light emission control signal generation circuits, wherein: the plurality of light emission control signal generation circuits are divided into a plurality of blocks, and individual blocks are input with different light emission enable signals based on the indication signal to generate light emission control signals, there is no physical connection between an output end of one of the plurality of blocks and an input end of another one of the plurality of blocks; if the indication signal indicates that a frame corresponding to one of the plurality of blocks is the dynamic frame, the one of the plurality of blocks is input with a modulated driving signal; if the indication signal indicates that a frame corresponding to one of the plurality of blocks is the static frame, the one of the plurality of blocks is input with a normal driving signal; and a light emission enable portion of the modulated driving signal is shorter than a light emission enable portion of the normal driving signal. ### Claim 13 (depends on 12) The display device according to claim 12, wherein a level of a data signal in a charging phase corresponding to the dynamic frame is higher than a level of a data signal in a charging phase corresponding to the static frame.