# US 12,193,272 B2 · Display device having transistors with bent regions and other transistors without bent regions > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,193,272 B2 - Document ID: US12193272B2 - Status: Granted - Kind: B2 - Application number: 18/453,037 - Filed: 2023-08-21 - Published: 2023-12-07 - Granted: 2025-01-07 - Earliest claimed: 2018-11-15 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jin Woo Park; Won Kyu Kwak; Dong Wook Kim; Hyun-Chol Bang - Web page: https://patentgrep.com/patent/US12193272B2 ## CPC - H10K 59/1213: {the pixel elements being TFTs} - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - G09G 3/3225: using an active matrix - H10K 59/126: Shielding, e.g. light-blocking means over the TFTs - H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels} - H10K 59/38: comprising colour filters or colour changing media [CCM] - G09G 2360/145: the light originating from the display screen - H10K 59/131: Interconnections, e.g. wiring lines or terminals - H10K 59/65: OLEDs integrated with inorganic image sensors - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - 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 including a display panel including a plurality of transistors and displaying an image on a front surface thereof; and a sensing module on a rear surface of the display panel, wherein the display panel includes a first region that overlaps the sensing module and a second region that does not overlap the sensing module, a W/L ratio of one of the transistors in the first region is greater than a W/L ratio of another of the transistors in the second region, the W/L ratio being obtained by dividing a width of a channel of the transistor by a length of the channel. ## Claims ### Claim 1 A display device, comprising: a display panel including a plurality of transistors and displaying an image on a front surface thereof; and a sensing module on a rear surface of the display panel, wherein: the display panel includes a first region that overlaps the sensing module and a second region that does not overlap the sensing module, the transistors in the second region each include a bent region between a source and a drain, and the transistors in the first region do not include a bent region, and the number of transistors with bent regions is greater than the number of transistors with non-bent regions. ### Claim 2 (depends on 1) The display device as claimed in claim 1, wherein the one transistor in the first region and the other transistor in the second region are driving transistors. ### Claim 3 (depends on 1) The display device as claimed in claim 1, wherein: the display panel includes a plurality of pixels, and a pixel density of the first region is smaller than a pixel density of the second region. ### Claim 4 (depends on 3) The display device as claimed in claim 3, wherein the pixel density of the first region is 20% to 90% of the pixel density of the second region. ### Claim 5 (depends on 1) The display device as claimed in claim 1, wherein the first region includes a transmitting region. ### Claim 6 (depends on 5) The display device as claimed in claim 5, wherein an area occupied by a transmitting region is 20% to 90% of a total area of the first region. ### Claim 7 (depends on 1) The display device as claimed in claim 1, wherein the display panel further includes: a first substrate on which the plurality of transistors are disposed, and a light blocking layer between the first substrate and at least one transistor of the plurality of transistors. ### Claim 8 (depends on 7) The display device as claimed in claim 7, wherein the light blocking layer blocks infrared rays. ### Claim 9 (depends on 7) The display device as claimed in claim 7, wherein the light blocking layer is in the first region and not in the second region. ### Claim 10 (depends on 9) The display device as claimed in claim 9, wherein: in the first region, the plurality of transistors include a driving transistor, a switching transistor, and a compensation transistor, and the light blocking layer overlaps the driving transistor and the switching transistor and does not overlap the compensation transistor. ### Claim 11 (depends on 9) The display device as claimed in claim 9, wherein: in the first region, the plurality of transistors include a driving transistor, a switching transistor, and a compensation transistor, and the light blocking layer overlaps all of the driving transistor, the switching transistor, and the compensation transistor. ### Claim 12 (depends on 1) The display device as claimed in claim 1, further comprising a color filter layer on the front surface of the display panel, wherein the color filter layer does not overlap the first region. ### Claim 13 (depends on 12) The display device as claimed in claim 12, further comprising a transparent layer overlapping the first region. ### Claim 14 (depends on 1) The display device as claimed in claim 1, wherein a luminance of a pixel in the first region is higher than a luminance of a pixel in the second region.