# US 12,602,134 B2 · Electronic device having a touch layer overlapping a display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,602,134 B2 - Document ID: US12602134B2 - Status: Granted - Kind: B2 - Application number: 18/962,055 - Filed: 2024-11-27 - Published: 2025-06-26 - Granted: 2026-04-14 - Earliest claimed: 2023-12-22 - Assignees: Innolux Corporation - Applicants: InnoLux Corporation - Inventors: Chun-Li Chu; Wei-Kang Ji; Yu-Sheng Kao; Chih-Yi Chen; Shang-Ming Yen - Web page: https://patentgrep.com/patent/US12602134B2 ## CPC - G06F 3/04184: {Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally} - G06F 3/0412: {Digitisers structurally integrated in a display} - G06F 3/04166: {Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving (Synchronisation with the driving of the display or the backlighting unit to avoid interferences generated internally G06F3/04184)} - G06F 3/046: by electromagnetic means - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - 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) ## Abstract An electronic device is provided, which includes a display panel, a timing control unit, a touch layer, a touch control unit, a processing unit, a light-emitting layer, and a light source driving unit. The timing control unit is electrically connected to the display panel and provides synchronization signals. The touch layer and the light-emitting layer overlap the display panel. The touch control unit is electrically connected to the touch control layer and provides a touch signal. The processing unit is electrically connected to the timing control unit and the touch control unit and generates a light-emitting signal according to the synchronization and touch signals. The light source driving unit is electrically connected to the processing unit and controls the light-emitting layer according to the light-emitting signal to emit light in the first light-emitting mode during the first frame and in the second light-emitting mode during the second frame. ## Claims ### Claim 1 An electronic device, comprising: a display panel; a timing control unit electrically connected to the display panel and used to provide a plurality of synchronization signals, wherein the display panel displays a first frame according to a first synchronization signal of the plurality of synchronization signals, and displays a second frame according to a second synchronization signal of the plurality of synchronization signals; a touch layer overlapping the display panel; a touch control unit electrically connected to the touch layer and used to provide a touch signal; a processing unit electrically connected to the timing control unit and the touch control unit, and used to generate a light-emitting signal according to the plurality of synchronization signals and the touch signal; a light-emitting layer overlapping the display panel and used to provide a light source to the display panel; and a light source driving unit electrically connected to the processing unit, wherein the light source driving unit controls the light-emitting layer to emit light in a first light-emitting mode during the first frame and controls the light-emitting layer to emit light in a second light-emitting mode during the second frame according to the light-emitting signal, wherein the first light-emitting mode and the second light-emitting mode are different, wherein in the first light-emitting mode, the first frame comprises a stop period and a first light-emitting period, wherein the light-emitting layer does not emit light during the stop period, and the light-emitting layer emits light during the first light-emitting period, wherein in the second light-emitting mode, the light-emitting layer continues to emit light during the entire period of the second frame. ### Claim 2 (depends on 1) The electronic device as claimed in claim 1, wherein the second frame comprises a second light-emitting period, and the length of the second light-emitting period is between 1 ms and 20 ms. ### Claim 3 (depends on 1) The electronic device as claimed in claim 1, wherein the second frame comprises a second light-emitting period, and a sum of a length of the stop period and a length of the first light-emitting period is equal to the length of the second light-emitting period. ### Claim 4 (depends on 1) The electronic device as claimed in claim 1, wherein the first frame is adjacent to the second frame. ### Claim 5 (depends on 4) The electronic device as claimed in claim 4, wherein the display panel is used to continuously display a plurality of frames, the plurality of frames comprise two first frames displayed sequentially and M second frames between the two first frames, wherein Mis a positive integer between 2 and 15. ### Claim 6 (depends on 1) The electronic device as claimed in claim 1, wherein in the first frame, the stop period overlaps a period of providing the touch signal, and the first light-emitting period does not overlap the period of providing the touch signal. ### Claim 7 (depends on 6) The electronic device as claimed in claim 6, wherein in the first frame, the period of providing the touch signal is before the first light-emitting period. ### Claim 8 (depends on 1) The electronic device as claimed in claim 1, wherein in the first frame, a length of the stop period is between 1 ms and 12 ms. ### Claim 9 (depends on 1) The electronic device as claimed in claim 1, wherein in the first frame, a length of the first light-emitting period is between 1 ms and 20 ms. ### Claim 10 (depends on 1) The electronic device as claimed in claim 1, wherein a length of providing the touch signal is the same as a length of the stop period. ### Claim 11 (depends on 1) The electronic device as claimed in claim 1, wherein the light-emitting layer comprises a plurality of light-emitting units, and the light source driving unit is configured to cause the plurality of light-emitting units to scan. ### Claim 12 (depends on 11) The electronic device as claimed in claim 11, wherein the plurality of light-emitting units are arranged in X rows and Y columns, and the light source driving unit sequentially turns on the light-emitting units by rows or columns. ### Claim 13 (depends on 12) The electronic device as claimed in claim 12, wherein X and/or Y are positive integers between 1 and 150. ### Claim 14 (depends on 1) The electronic device as claimed in claim 1, further comprising a light source module, wherein the light source module comprises a substrate, the touch layer, and the light-emitting layer, wherein the light-emitting layer and the touch layer are disposed on the substrate. ### Claim 15 (depends on 1) The electronic device as claimed in claim 1, wherein the touch layer is provided of an in-cell type or an out-cell type. ### Claim 16 (depends on 1) The electronic device as claimed in claim 1, further comprising an electromagnetic induction element, wherein the touch layer comprises an electromagnetic coil, and the electromagnetic induction element is used to sense the electromagnetic coil of the touch layer. ### Claim 17 (depends on 1) The electronic device as claimed in claim 1, further comprising a gate driving unit used to scan the display panel during the first frame and the second frame. ### Claim 18 (depends on 1) The electronic device as claimed in claim 1, wherein the processing unit comprises an AND gate, a NAND gate, a NOR gate, or a combination thereof.