# US 10,503,280 B2 · Display driving integrated circuit and electronic device having the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,503,280 B2 - Document ID: US10503280B2 - Status: Granted - Kind: B2 - Application number: 15/492,474 - Filed: 2017-04-20 - Published: 2017-10-26 - Granted: 2019-12-10 - Earliest claimed: 2016-04-20 - Assignees: Samsung Electronics Co., Ltd. - Applicants: Samsung Electronics Co., Ltd. - Inventors: Dae Hyun Yoo; Louis Hyunsuk Jung; Tae Sung Kim; Jong Kon Bae; Dong Kyoon Han - Web page: https://patentgrep.com/patent/US10503280B2 ## CPC - G06F 3/03545: {Pens or stylus} - G06F 1/3293: by switching to a less power-consuming processor, e.g. sub-CPU - G06F 3/04817: using icons (graphical or visual programming using iconic symbols G06F8/34) - G06F 3/0488: using a touch-screen or digitiser, e.g. input of commands through traced gestures - G09G 3/20: 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} - G09G 5/003: {Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto (specific for a CRT G09G1/165; for a flat panel G09G3/2092)} - G06F 2203/04804: Transparency, e.g. transparent or translucent windows - G09G 2310/04: Partial updating of the display screen - G09G 2330/021: Power management, e.g. power saving - G09G 2340/12: Overlay of images, i.e. displayed pixel being the result of switching between the corresponding input pixels - G09G 2340/145: related to small screens - Y02D 10/00: Energy efficient computing, e.g. low power processors, power management or thermal management - G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N) - 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) - Y02D: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE ## Abstract An electronic device is provided. The electronic device includes a display panel including a plurality of pixels, a first processor configured to execute an application, a first display driving integrated circuit including a second processor and a graphics memory, and a second display driving integrated circuit including a source driver configured to control at least some of the plurality of pixels. The second processor is configured to, when the first processor is in an inactive state with respect to the first display driving integrated circuit, compose or post-process another image to be displayed through the display panel based at least on at least one image stored in the graphics memory, by using the first display driving integrated circuit, and transmit the other image to the second display driving integrated circuit such that the other image is displayed through the display panel. ## Claims ### Claim 1 An electronic device comprising: a display panel including a plurality of pixels; a random access memory (RAM); an application processor (AP) connected with the RAM and configured to execute an application; a first chip including a first display driving integrated circuit, wherein the first display driving integrated circuit includes a microcontroller unit (MCU) and a graphics memory; and a second chip including a second display driving integrated circuit, wherein the second chip is connected to the display panel, wherein the first chip is configured to receive first image data from the AP and output second image data to the second chip, wherein the second display driving integrated circuit includes source drivers, gate drivers, and a timing controller configured to drive the plurality of pixels according to the second image data output by the first chip, wherein the timing controller is further configured to generate a source control signal for controlling an operation timing of the source drivers and a gate control signal for controlling an operation timing of the gate drivers, and wherein the MCU is configured to: when the AP is in a sleep state, compose the first image data with at least one image stored in the graphics memory based on a control signal received from the AP or post-process the first image data, to generate the second image data, and output the second image data to the second chip. ### Claim 2 (depends on 1) The electronic device of claim 1, wherein the first display driving integrated circuit is formed to be adjacent to one surface of the display panel. ### Claim 3 (depends on 1) The electronic device of claim 1, wherein the first display driving integrated circuit further includes: an image processor configured to change image data received from the first processor; and a magnifier configured to adjust an arrangement size of the second image data. ### Claim 4 (depends on 1) The electronic device of claim 1, wherein the MCU is further configured to operate at a specified power value or less. ### Claim 5 (depends on 1) The electronic device of claim 1, wherein the MCU is further configured to: establish a separate channel with at least one of a communication processor (CP), a touch control circuit, a touch pen control circuit, a sensor hub, or a global positioning system (GPS) control module; sense an occurrence of a specified event received through the channel; and generate the second image data including the at least one image stored in the graphics memory based at least on the specified event. ### Claim 6 (depends on 5) The electronic device of claim 5, wherein the MCU is further configured to: receive brightness information of a periphery of the electronic device through the separate channel connected with the sensor hub; and generate the second image data based on the brightness information. ### Claim 7 (depends on 5) The electronic device of claim 5, wherein the MCU is further configured to: receive coordinate information of a touch pen through the separate channel connected with the touch pen control circuit; and generate the second image data based on the coordinate information. ### Claim 8 (depends on 1) The electronic device of claim 1, wherein the MCU is further configured to, in response to an internal periodic timing signal of the MCU, update the second image data to include the at least one image stored in the graphics memory. ### Claim 9 (depends on 1) The electronic device of claim 1, wherein the graphics memory includes: a first area configured to store the first image data transmitted from the AP; and a second area configured to store a partial image for composing the second image data. ### Claim 10 (depends on 9) The electronic device of claim 9, wherein the second area is further configured to store the partial image as having a specified capacity or less. ### Claim 11 (depends on 9) The electronic device of claim 9, wherein the second area is initialized or updated based on an image transmitted by the AP. ### Claim 12 (depends on 1) The electronic device of claim 1, wherein the MCU is further configured to output the second image data including an icon or text of a status bar, which is to be output through the display panel. ### Claim 13 (depends on 1) The electronic device of claim 1, wherein the MCU is further configured to output the second image data including at least a part of a lock view, a view cover screen, or an always on screen through the display panel. ### Claim 14 (depends on 1) The electronic device of claim 1, wherein the MCU is further configured to, in response to an internal periodic timing signal of the MCU, output the second image data including an animation effect. ### Claim 15 (depends on 14) The electronic device of claim 14, wherein the MCU is further configured to output the second image data including the animation effect by stepwise changing transparency or a background color of one image. ### Claim 16 (depends on 1) The electronic device of claim 1, wherein the MCU is further configured to, in a state where a first screen obtained by combining main image data transmitted from the AP and partial image data for composing the second image data is output, output a second screen composed of the partial image data based on a specified user input. ### Claim 17 (depends on 1) The electronic device of claim 1, wherein the first display driving integrated circuit does not include a separate source driver.