# US 10,770,513 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 10,770,513 B2 - Document ID: US10770513B2 - Status: Granted - Kind: B2 - Application number: 15/615,559 - Filed: 2017-06-06 - Published: 2018-02-15 - Granted: 2020-09-08 - Earliest claimed: 2016-08-11 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Seung-Yeon Chae; Sung-Young Choi - Web page: https://patentgrep.com/patent/US10770513B2 ## CPC - H10K 59/50: OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements - G09F 19/12: using special optical effects - H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT] - H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light} - H10N 70/881: {Switching materials} - G09G 3/3433: {using light modulating elements actuated by an electric field and being other than liquid crystal devices and electrochromic devices (using liquid crystal devices G09G3/36; using electrochromic devices G09G3/38)} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES - G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS - H10N: ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR - 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 may include a first transistor, a first electrode, a second electrode, a first intermediate layer, and a first changeable layer. The first electrode is electrically connected to the first transistor. The second electrode overlaps the first electrode. The first intermediate layer is positioned between the first electrode and the second electrode and may emit first light when the first electrode and the second electrode generate a first electric field. The first changeable layer, which overlaps the first electrode, may have a first transmittance value when the first electrode and the second electrode generate the first electric field, and may have a second transmittance value when the first electrode and the second electrode do not generate the first electric field. The second transmittance value is unequal to the first transmittance value. ## Claims ### Claim 1 A display device comprising: a first transistor; a first electrode, which is electrically connected to the first transistor; a second electrode, which overlaps the first electrode; a first intermediate layer, which is positioned between the first electrode and the second electrode, wherein a first electric field generated by the first electrode with the second electrode causes the first intermediate layer to emit first light; a first changeable layer, which overlaps the first electrode, wherein the first electric field generated by the first electrode with the second electrode causes the first changeable layer to change from having a second transmittance value to having a first transmittance value, wherein the second transmittance value is unequal to the first transmittance value; a second transistor, wherein no intervening transistor is positioned between the first transistor and the second transistor; a third electrode, which is electrically connected to the second transistor; a second intermediate layer, which is positioned between the third electrode and the second electrode and is configured to emit second light when the third electrode and the second electrode generate a second electric field; and a second changeable layer, which overlaps the third electrode, is configured to have the first transmittance value when the third electrode and the second electrode generate the second electric field, and is configured to have the second transmittance value when the third electrode and the second electrode do not generate the second electric field. ### Claim 2 (depends on 1) The display device of claim 1, further comprising a black member positioned between the first changeable layer and the second changeable layer. ### Claim 3 (depends on 2) The display device of claim 2, wherein the first intermediate layer is positioned between the first changeable layer and the black member. ### Claim 4 (depends on 1) The display device of claim 1, wherein a portion of the second electrode is positioned between the first changeable layer and the second changeable layer and directly contacts each of the first changeable layer and the second changeable layer. ### Claim 5 (depends on 1) The display device of claim 1, further comprising: a connection layer directly connected to each of the first changeable layer and the second changeable layer, wherein a material of the connection layer is identical to each of a material of the first changeable layer and a material of the second changeable layer, and the first changeable layer is connected through the connection layer to the second changeable layer. ### Claim 6 (depends on 5) The display device of claim 5, wherein: the connection layer has a recess, and the recess is positioned between the first changeable layer and the second changeable layer. ### Claim 7 (depends on 5) The display device of claim 5, further comprising: a black member, wherein the connection layer is positioned over the black member. ### Claim 8 (depends on 7) The display device of claim 7, wherein the connection layer is positioned between the black member and an end portion of the first changeable layer. ### Claim 9 (depends on 5) The display device of claim 5, further comprising: a fourth electrode electrically connected to the first electrode, wherein the first changeable layer is positioned between the second electrode and the fourth electrode, and the second electrode is positioned between the first electrode and the first changeable layer. ### Claim 10 (depends on 9) The display device of claim 9, wherein the first changeable layer directly contacts each of the second electrode and the fourth electrode. ### Claim 11 (depends on 9) The display device of claim 9, further comprising: a fifth electrode electrically connected to the third electrode, wherein the second changeable layer is positioned between the second electrode and the fifth electrode, and a recess of the connection layer is positioned between the fourth electrode and the fifth electrode. ### Claim 12 A display device, comprising: a first transistor; a first electrode, which is electrically connected to the first transistor; a second electrode, which overlaps the first electrode; a first intermediate layer, which is positioned between the first electrode and the second electrode, wherein a first electric field generated by the first electrode with the second electrode causes the first intermediate layer to emit first light; a first changeable layer, which overlaps the first electrode, wherein the first electric field generated by the first electrode with the second electrode causes the first changeable layer to change from having a second transmittance value to having a first transmittance value, wherein the second transmittance value is unequal to the first transmittance value; and a third electrode, which is electrically connected to the second electrode, wherein the first changeable layer is positioned between the first electrode and the third electrode, and wherein the first electrode is positioned between the second electrode and the first changeable layer. ### Claim 13 (depends on 12) The display device of claim 12, further comprising: a second transistor, wherein no intervening transistor is positioned between the first transistor and the second transistor; a fourth electrode, which is electrically connected to the second transistor; a fifth electrode, which overlaps the fourth electrode, is spaced from the second electrode, and is electrically connected to the third electrode; a second intermediate layer, which is positioned between the fourth electrode and the fifth electrode and is configured to emit second light when the fourth electrode and the fifth electrode generate a second electric field; and a second changeable layer, which is positioned between the fourth electrode and the third electrode, is configured to have the first transmittance value when the fourth electrode and the fifth electrode generate the second electric field, and is configured to have the second transmittance value when the fourth electrode and the fifth electrode do not generate the second electric field. ### Claim 14 (depends on 13) The display device of claim 13, wherein a portion of the third electrode is positioned between the first changeable layer and the second changeable layer and directly contacts each of the first changeable layer and the second changeable layer.