# US 12,217,661 B2 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,217,661 B2 - Document ID: US12217661B2 - Status: Granted - Kind: B2 - Application number: 18/489,996 - Filed: 2023-10-19 - Published: 2024-05-23 - Granted: 2025-02-04 - Earliest claimed: 2022-11-18 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., LTD. - Inventors: Bongwon Lee; Dongsoo Kim; Hyungjun Park; Hyun-Chol Bang; Young-Soo Yoon; Taehyoung No; Yun-Kyeong In - Web page: https://patentgrep.com/patent/US12217661B2 ## CPC - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - G09G 2310/0267: Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays - G09G 2310/0275: Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current - G09G 2310/0297: Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns - 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 A display device includes a substrate including a display area and a non-display area adjacent to the display area, a plurality of pixels disposed on the display area of the substrate, and a switching unit disposed on the non-display area of the substrate, connected to each of the plurality of pixels, and including a plurality of first demultiplexers and a plurality of second demultiplexers having sizes different from sizes of the plurality of first demultiplexers. ## Claims ### Claim 1 A display device comprising: a substrate including a display area and a non-display area adjacent to the display area; a plurality of pixels disposed on the display area of the substrate; and a switching unit disposed on the non-display area of the substrate, connected to each of the plurality of pixels, and including a plurality of first demultiplexers and a plurality of second demultiplexers having sizes different from sizes of the plurality of first demultiplexers, wherein heights of the plurality of second demultiplexers are greater than heights of the plurality of first demultiplexers. ### Claim 2 (depends on 1) The display device of claim 1, wherein the display area includes a first display area and a second display area adjacent to at least one side of the first display area, and the second display area includes a rounded corner portion. ### Claim 3 (depends on 2) The display device of claim 2, wherein the switching unit includes: a first switching unit adjacent to the first display area; and a second switching unit adjacent to the second display area. ### Claim 4 (depends on 3) The display device of claim 3, wherein the first switching unit includes the plurality of first demultiplexers, and the second switching unit includes the plurality of second demultiplexers. ### Claim 5 (depends on 3) The display device of claim 3, wherein the second switching unit is disposed along the rounded corner portion of the second display area. ### Claim 6 (depends on 1) The display device of claim 1, wherein widths of the plurality of first demultiplexers are greater than widths of the plurality of second demultiplexers. ### Claim 7 (depends on 5) The display device of claim 5, wherein pixels adjacent to an outer edge portion of the display area among the plurality of pixels are arranged in a stepwise manner, the second demultiplexers are arranged along the rounded corner portion such that bottom and top surfaces of a first subset of the second demultiplexers are respectively aligned linearly with each other, and are not respectively aligned linearly with a bottom and a top surface of a second subset of the second demultiplexers, wherein none of the second demultiplexers of the first subset are in the second subset, the second demultiplexers of the second subset having a shape bent towards the rounded corner portion. ### Claim 8 (depends on 1) The display device of claim 1, wherein each of the plurality of first demultiplexers and the plurality of second demultiplexers includes at least one transistor. ### Claim 9 (depends on 8) The display device of claim 8, wherein a number of transistors included in the plurality of first demultiplexers and a number of transistors included in the plurality of second demultiplexers are same as each other. ### Claim 10 (depends on 1) The display device of claim 1, further comprising: a plurality of data lines disposed on the substrate, extending in a first direction, and connected to each of the plurality of pixels. ### Claim 11 (depends on 10) The display device of claim 10, wherein the switching unit is connected to each of the plurality of pixels through the plurality of data lines. ### Claim 12 (depends on 10) The display device of claim 10, further comprising: a plurality of scan lines disposed on the substrate, extending in a second direction intersecting the first direction, and connected to each of the plurality of pixels. ### Claim 13 A display device comprising: a substrate including: a first display area, a second display area adjacent to at least one side of the first display area, and a non-display area adjacent to the first and second display areas; a plurality of pixels disposed on each of the first and second display areas of the substrate; and a switching unit disposed on the non-display area of the substrate and including a plurality of demultiplexers, wherein the switching unit includes: a first switching unit adjacent to the first display area and connected to the plurality of pixels disposed in the first display area and a second switching unit adjacent to the second display area and connected to the plurality of pixels disposed in the second display area, and the plurality of demultiplexers included in the second switching unit are arranged in a stepwise manner, wherein the plurality of demultiplexers includes a first demultiplexer and a second demultiplexer, and a height of the first demultiplexer is different than a height of the second demultiplexer. ### Claim 14 (depends on 13) The display device of claim 13, wherein the second display area includes a rounded corner portion. ### Claim 15 (depends on 14) The display device of claim 14, wherein the plurality of demultiplexers included in the second switching unit are arranged in the stepwise manner along the rounded corner portion of the second display area. ### Claim 16 (depends on 13) The display device of claim 13, wherein pixels adjacent to an outer edge portion of the second display area among the plurality of pixels are arranged in a stepwise manner. ### Claim 17 (depends on 13) The display device of claim 13, further comprising: a plurality of data lines disposed on the substrate, extending in a first direction, and connected to each of the plurality of pixels, and wherein each of the first and second switching units is connected to the plurality of pixels through the plurality of data lines. ### Claim 18 (depends on 17) The display device of claim 17, further comprising: a plurality of scan lines disposed on the substrate, extending in a second direction intersecting the first direction, and connected to each of the plurality of pixels. ### Claim 19 (depends on 13) The display device of claim 13, wherein the plurality of demultiplexers include at least one transistor.