# US 2021/0278729 A1 · Display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0278729 A1 - Document ID: US20210278729A1 - Status: Published application - Kind: A1 - Application number: 17/328,555 - Filed: 2021-05-24 - Published: 2021-09-09 - Earliest claimed: 2018-10-18 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Dong Wook KIM; Won Kyu KWAK; Jin Woo PARK; Hyun-Chol BANG - Web page: https://patentgrep.com/patent/US20210278729A1 ## CPC - H10K 59/121: characterised by the geometry or disposition of pixel elements - G02F 1/13318: {Circuits comprising a photodetector} - G02F 1/134336: {Matrix} - H10K 59/352: {the areas of the RGB subpixels being different} - H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels} - G02F 1/13312: {Circuits comprising photodetectors for purposes other than feedback} - G02F 1/134318: {having a patterned common electrode} - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G02F 2201/52: RGB geometrical arrangements - 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 2300/0426: Layout of electrodes and connections - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2340/0407: Resolution change, inclusive of the use of different resolutions for different screen areas - H10K 59/65: OLEDs integrated with inorganic image sensors - H10K 59/80515: {characterised by their shape} - H10K 59/80521: {characterised by their shape} - H10K 71/621: {Providing a shape to conductive layers, e.g. patterning or selective deposition} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS - 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 first display area and a second display area. The first display area includes first pixel areas, each including one or more first pixels. The second display area includes second pixel areas including one or more second pixels and a light transmittance area having a higher light transmittance than the second pixel area. The first and second display areas include a common electrode that transmits a constant common voltage. The common electrode in the second display area includes patterned regions that correspond to a first light transmittance area included in the light transmittance area. A thickness of the common electrode in the patterned regions is smaller than a thickness of the common electrode in a region other than the patterned regions or equals zero. The patterned regions and the second pixel areas extend alternately along a first direction in the second display area. ## Claims ### Claim 1 A display device, comprising: a substrate that includes a first display area and a second display area, the first display area including a plurality of first pixels, and the second display area including a plurality of second pixels; a plurality of transistors formed on the substrate; a plurality of pixel electrodes on the plurality of transistors; an emission layer on the plurality of pixel electrodes; and a common electrode on the emission layer and transmitting a common voltage, wherein the common electrode disposed in the second display area has at least one opening where the common electrode is not present. ### Claim 2 (depends on 1) The display device as claimed in claim 1, wherein the common electrode in the first display area is continuously formed with a uniform thickness. ### Claim 3 (depends on 1) The display device as claimed in claim 1, wherein the common electrode disposed in the second display area has a plurality of the openings, each of the plurality of pixel electrodes, the emission layer and the common electrode that overlap each other and are disposed in the second pixel form a light emitting diode, and the light emitting diode and the opening of the common electrode are alternately arranged in a first direction in the second display area. ### Claim 4 (depends on 3) The display device as claimed in claim 3, wherein, in the second display area, the light emitting diode and the opening of the common electrode are also alternately arranged in a second direction perpendicular to the first direction. ### Claim 5 (depends on 3) The display device as claimed in claim 3, wherein the plurality of second pixels comprises a first color pixel representing a first color, a second color pixel representing a second color that is different from the first color, and a third color pixel representing a third color that is different from the first color and the second color. ### Claim 6 (depends on 5) The display device as claimed in claim 5, wherein the first color pixel, the second color pixel, and the third color pixel are formed in a same shape as each other and are adjacently arranged in a line. ### Claim 7 (depends on 5) The display device as claimed in claim 5, wherein at least two of the first color pixel, the second color pixel, and the third color pixel are different in size from each other. ### Claim 8 (depends on 3) The display device as claimed in claim 3, wherein one of the at least one opening extends long in a second direction perpendicular to the first direction. ### Claim 9 A display device, comprising: a substrate that includes a first display area and a second display area, the first display area including a plurality of first pixels, and the second display area including a plurality of second pixels; a plurality of transistors formed on the substrate; a plurality of pixel electrodes on the plurality of transistors; an emission layer on the plurality of pixel electrodes; and a common electrode on the emission layer and transmitting a common voltage, wherein the common electrode disposed in the second display area has at least one patterned region, and a thickness of the common electrode in the patterned region is smaller than a thickness of the common electrode in a region other than the patterned region. ### Claim 10 (depends on 9) The display device as claimed in claim 9, wherein the common electrode in the first display area is continuously formed with a uniform thickness. ### Claim 11 (depends on 9) The display device as claimed in claim 9, wherein the common electrode disposed in the second display area has a plurality of the patterned regions, each of the plurality of pixel electrodes, the emission layer and the common electrode that overlap each other and are disposed in the second pixel form a light emitting diode, and the light emitting diode and the patterned region of the common electrode are alternately arranged in a first direction in the second display area. ### Claim 12 (depends on 11) The display device as claimed in claim 11, wherein, in the second display area, the light emitting diode and the patterned region of the common electrode are also alternately arranged in a second direction perpendicular to the first direction. ### Claim 13 (depends on 11) The display device as claimed in claim 11, wherein the plurality of second pixels comprises a first color pixel representing a first color, a second color pixel representing a second color that is different from the first color, and a third color pixel representing a third color that is different from the first color and the second color. ### Claim 14 (depends on 13) The display device as claimed in claim 13, wherein the first color pixel, the second color pixel, and the third color pixel are formed in a same shape as each other and are adjacently arranged in a line. ### Claim 15 (depends on 13) The display device as claimed in claim 13, wherein at least two of the first color pixel, the second color pixel, and the third color pixel are different in size from each other. ### Claim 16 (depends on 11) The display device as claimed in claim 11, wherein one of the at least one patterned region extends long in a second direction perpendicular to the first direction.