# US 12,007,647 B2 · Color conversion panel with improved light efficiency and display device including the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,007,647 B2 - Document ID: US12007647B2 - Status: Granted - Kind: B2 - Application number: 17/310,306 - Filed: 2020-03-25 - Published: 2022-02-17 - Granted: 2024-06-11 - Earliest claimed: 2019-05-09 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Chang-Soon Jang; Byung-Chul Kim; In-Ok Kim; Jae-Min Seong; In-Seok Song; Gak-Seok Lee; Ji-Eun Jang; Sun-Kyu Joo; Ha-Lim Ji - Web page: https://patentgrep.com/patent/US12007647B2 ## CPC - G02F 1/133617: {Illumination with ultraviolet light; Luminescent elements or materials associated to the cell} - G02F 1/133553: {Reflecting elements (associated to illuminating devices G02F1/133605)} - G02F 1/133614: {using photoluminescence, e.g. phosphors illuminated by UV or blue light} - G02F 1/133621: {providing coloured light (G02F1/133617, G02F1/133533 take precedence)} - H10K 59/123: Connection of the pixel electrodes to the thin film transistors [TFT] - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/878: {comprising reflective means} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - G02F 1/133514: {Colour filters} - 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 - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display device includes: a display panel; and a color conversion panel overlapping with the display panel. The color conversion panel includes: a substrate; a first color conversion pattern on the substrate; a second color conversion pattern on the substrate, and partially overlapping with the first color conversion pattern; a first reflective partition wall between the first color conversion pattern and the second color conversion pattern; a first color filter between the substrate and the first color conversion pattern; and a second color filter between the substrate and the second color conversion pattern. ## Claims ### Claim 1 A display device, comprising: a display panel; and a color conversion panel overlapping with the display panel, the color conversion panel comprising: a substrate; a first color conversion pattern on the substrate; a second color conversion pattern on the substrate, and partially overlapping with the first color conversion pattern; a transmission pattern on the substrate, and partially overlapping with a portion of the first color conversion pattern that is adjacent thereto and the second color conversion pattern; a first reflective partition wall between the first color conversion pattern and the second color conversion pattern; a first color filter between the substrate and the first color conversion pattern; and a second color filter between the substrate and the second color conversion pattern. ### Claim 2 (depends on 1) The display device of claim 1, wherein the first reflective partition wall covers a side of the first color conversion pattern. ### Claim 3 (depends on 2) The display device of claim 2, wherein the second color conversion pattern does not contact the first color conversion pattern. ### Claim 4 (depends on 1) The display device of claim 1, wherein the second color conversion pattern contacts the first color conversion pattern underneath the first reflective partition wall. ### Claim 5 (depends on 1) The display device of claim 1, wherein the color conversion panel further comprises: a light blocking pattern partially overlapping with the first color conversion pattern and the second color conversion pattern between the first color conversion pattern and the second color conversion pattern. ### Claim 6 (depends on 5) The display device of claim 5, wherein the light blocking pattern is located between the substrate and the first color conversion pattern, and between the substrate and the second color conversion pattern. ### Claim 7 (depends on 5) The display device of claim 5, wherein the light blocking pattern is located on the first color conversion pattern and the second color conversion pattern. ### Claim 8 (depends on 5) The display device of claim 5, wherein a width of the light blocking pattern is greater than a width of an area in which the first color conversion pattern overlaps with the second color conversion pattern. ### Claim 9 (depends on 1) The display device of claim 1, wherein the color conversion panel further comprises: a second reflective partition wall between the portion of the first color conversion pattern and the transmission pattern, and between the second color conversion pattern and the transmission pattern. ### Claim 10 (depends on 9) The display device of claim 9, wherein the second reflective partition wall covers a side of the transmission pattern. ### Claim 11 (depends on 10) The display device of claim 10, wherein the transmission pattern does not contact the portion of the first color conversion pattern and the second color conversion pattern. ### Claim 12 (depends on 9) The display device of claim 9, wherein the transmission pattern contacts the portion of the first color conversion pattern and the second color conversion pattern underneath the second reflective partition wall. ### Claim 13 (depends on 1) The display device of claim 1, wherein the display panel is configured to emit a first color light to the color conversion panel, wherein the first color conversion pattern is configured to convert the first color light into a second color light, wherein the second color conversion pattern is configured to convert the first color light into a third color light, and wherein the transmission pattern is configured to transmit the first color light. ### Claim 14 (depends on 1) The display device of claim 1, wherein each of the first color conversion pattern and the second color conversion pattern comprises at least one of a quantum dot and a phosphor. ### Claim 15 A color conversion panel, comprising: a substrate; a first color conversion pattern on the substrate, and configured to convert an incident light into a first color light; a second color conversion pattern on the substrate, and configured to convert the incident light into a second color light, the second color conversion pattern partially overlapping with the first color conversion pattern; a transmission pattern on the substrate, and configured to transmit the incident light, the transmission pattern partially overlapping with a portion of the first color conversion pattern that is adjacent thereto; a first reflective partition wall between the first color conversion pattern and the second color conversion pattern; a first color filter between the substrate and the first color conversion pattern, and configured to block the incident light that is not converted by the first color conversion pattern; and a second color filter between the substrate and the second color conversion pattern, and configured to block the incident light that is not converted by the second color conversion pattern. ### Claim 16 (depends on 15) The color conversion panel of claim 15, further comprising: a second reflective partition wall between the portion of the first color conversion pattern and the transmission pattern. ### Claim 17 (depends on 15) The color conversion panel of claim 15, further comprising: a light blocking pattern partially overlapping with the first color conversion pattern and the second color conversion pattern between the first color conversion pattern and the second color conversion pattern, and partially overlapping with the portion of the first color conversion pattern and the transmission pattern between the portion of the first color conversion pattern and the transmission pattern. ### Claim 18 (depends on 17) The color conversion panel of claim 17, wherein the light blocking pattern is located between the substrate and the first color conversion pattern, between the substrate and the second color conversion pattern, and between the substrate and the transmission pattern. ### Claim 19 (depends on 17) The color conversion panel of claim 17, wherein the light blocking pattern is located on the first color conversion pattern, the second color conversion pattern, and the transmission pattern. ### Claim 20 A color conversion panel, comprising: a substrate; a first color conversion pattern on the substrate, and configured to convert an incident light into a first color light; a second color conversion pattern on the substrate, and configured to convert the incident light into a second color light, the second color conversion pattern being spaced apart from and not overlapping with the first color conversion pattern; a first reflective partition wall covering opposite sides of the first color conversion pattern; a second reflective partition wall covering opposite sides of the second color conversion pattern; a first color filter between the substrate and the first color conversion pattern, and configured to block the incident light that is not converted by the first color conversion pattern; and a second color filter between the substrate and the second color conversion pattern, and configured to block the incident light that is not converted by the second color conversion pattern. ### Claim 21 (depends on 20) The color conversion panel of claim 20, further comprising: a transmission pattern on the substrate, and configured to transmit the incident light, the transmission pattern being spaced apart from the first color conversion pattern and the second color conversion pattern. ### Claim 22 (depends on 21) The color conversion panel of claim 21, further comprising: a third reflective partition wall covering opposite sides of the transmission pattern. ### Claim 23 (depends on 22) The color conversion panel of claim 22, further comprising: a light blocking pattern partially overlapping with the first color conversion pattern and the second color conversion pattern between the first color conversion pattern and the second color conversion pattern, partially overlapping with a portion of the first color conversion pattern that is adjacent to the transmission pattern and the transmission pattern between the portion of the first color conversion pattern and the transmission pattern, and partially overlapping with the second color conversion pattern and the transmission pattern between the second color conversion pattern and the transmission pattern. ### Claim 24 (depends on 23) The color conversion panel of claim 23, wherein the light blocking pattern covers the first reflective partition wall, the second reflective partition wall, and the third reflective partition wall. ### Claim 25 (depends on 20) The color conversion panel of claim 20, wherein the second reflective partition wall is spaced apart from the first reflective partition wall.