# US 2021/0280146 A1 · Display device and electronic device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0280146 A1 - Document ID: US20210280146A1 - Status: Published application - Kind: A1 - Application number: 17/053,901 - Filed: 2019-05-14 - Published: 2021-09-09 - Earliest claimed: 2018-05-25 - Assignees: Semiconductor Energy Laboratory Co., Ltd. - Applicants: Semiconductor Energy Laboratory Co., Ltd. - Inventors: Susumu KAWASHIMA; Naoto KUSUMOTO - Web page: https://patentgrep.com/patent/US20210280146A1 ## CPC - G09G 3/3688: {suitable for active matrices only} - G09G 3/3275: Details of drivers for data electrodes - H10D 30/674: {characterised by the active materials} - H10K 59/121: characterised by the geometry or disposition of pixel elements - H10K 59/1216: {the pixel elements being capacitors} - G02F 1/13454: {Drivers integrated on the active matrix substrate (G02F1/136277 takes precedence)} - G02F 1/136213: {Storage capacitors associated with the pixel electrode} - G02F 1/13624: {having more than one switching element per pixel} - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G09G 3/3225: using an active matrix - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0852: being a dynamic memory with more than one capacitor - G09G 2310/0291: Details of output amplifiers or buffers arranged for use in a driving circuit - 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 2320/0233: Improving the luminance or brightness uniformity across the screen - H10D 30/6755: {Oxide semiconductors, e.g. zinc oxide, copper aluminium oxide or cadmium stannate} - H10D 30/6757: {characterised by the structure of the channel, e.g. transverse or longitudinal shape or doping profile (TFTs having channel structures for preventing kink or snapback effects H10D30/6708; TFTs having lightly-doped source or drain extensions H10D30/6715)} - H10D 86/423: {comprising semiconductor materials not belonging to the Group IV, e.g. InGaZnO} - H10D 86/481: {integrated with passive devices, e.g. auxiliary capacitors} - H10D 86/60: wherein the TFTs are in active matrices - H10K 59/1213: {the pixel elements being TFTs} - 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) - H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES - 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 ## Abstract A display device capable of improving image quality is provided. The display device is provided with an adder circuit in and outside a display region, and the adder circuit has a function of adding a plurality of data supplied from a source driver together. Components of the adder circuit are divided and partly arranged in the display region. Thus, limitation on the size of the component included in the adder circuit can be eased, and data addition can be performed efficiently. In addition, by providing other components included in the adder circuit outside the display region, the number of wirings in the display region can be reduced and the aperture ratio of the pixel can be increased. ## Claims ### Claim 1 A display device comprising: a first circuit comprising a first transistor, a second transistor, a third transistor, and a first capacitor; and a pixel comprising a fourth transistor, wherein the first transistor, the second transistor, and the third transistor are positioned outside a display region, wherein the first capacitor and the pixel are positioned in the display region, wherein the first circuit is configured to generate third data by adding first data and second data, wherein the pixel is configured to perform display in accordance with the third data, wherein one of a source and a drain of the first transistor is electrically connected to one of a source and a drain of the fourth transistor and one electrode of the first capacitor, wherein the other electrode of the first capacitor is electrically connected to one of a source and a drain of the second transistor and one of a source and a drain of the third transistor, wherein the other of the source and the drain of the first transistor is electrically connected to the other of the source and the drain of the second transistor, and wherein the first capacitor comprises a plurality of second capacitors which are electrically connected in parallel. ### Claim at position 2 -4. (canceled) ### Claim 5 (depends on 1) The display device according to claim 1, wherein the pixel comprises a second circuit, wherein the second circuit comprises a display element, and wherein the other of the source and the drain of the fourth transistor is electrically connected to the second circuit. ### Claim 6 (depends on 1) The display device according to claim 1, wherein the pixel comprises a second circuit, wherein the second circuit comprises a fifth transistor, a third capacitor, and a light-emitting element, wherein the other of the source and the drain of the fourth transistor is electrically connected to a gate of the fifth transistor and one electrode of the third capacitor, and wherein one of a source and a drain of the fifth transistor is electrically connected to the light-emitting element. ### Claim 7 (depends on 1) The display device according to claim 1, wherein the pixel comprises a second circuit, wherein the second circuit comprises a fifth transistor, a third capacitor, a light-emitting element, and a sixth transistor, wherein the other of the source and the drain of the fourth transistor is electrically connected to a gate of the fifth transistor and one electrode of the third capacitor, wherein one of a source and a drain of the fifth transistor is electrically connected to one of a source and a drain of the sixth transistor, and wherein the other of the source and the drain of the sixth transistor is electrically connected to the light-emitting element. ### Claim 8 (depends on 1) The display device according to claim 1, wherein the pixel comprises a liquid crystal element, and wherein the other of the source and the drain of the fourth transistor is electrically connected to the liquid crystal element. ### Claim 9 (canceled) ### Claim 10 (depends on 1) The display device according to claim 1, wherein the first transistor, the second transistor, the third transistor, and the fourth transistor each comprise a metal oxide in a channel formation region. ### Claim 11 (depends on 1) The display device according to claim 1, wherein a channel width of each of the first transistor, the second transistor, and the third transistor is larger than a channel width of the fourth transistor. ### Claim 12 (depends on 1) An electronic device comprising the display device according to claim 1. ### Claim 13 A display device comprising: a first circuit comprising a first transistor and a first capacitor; and a pixel, wherein the first transistor is positioned outside a display region, wherein the first capacitor and the pixel are positioned in the display region, wherein the first circuit is configured to generate third data by adding first data and second data, and wherein the pixel is configured to perform display in accordance with the third data. ### Claim 14 (depends on 13) The display device according to claim 13, wherein the first capacitor comprises a plurality of second capacitors which are electrically connected in parallel. ### Claim 15 (depends on 13) The display device according to claim 13, wherein the pixel comprises a light-emitting element or a liquid crystal element. ### Claim 16 (depends on 13) The display device according to claim 13, wherein the first transistor comprises a metal oxide in a channel formation region. ### Claim 17 (depends on 13) An electronic device comprising the display device according to claim 13.