# US 2017/0256751 A1 · Display panel, method of manufacturing the same and display device > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0256751 A1 - Document ID: US20170256751A1 - Status: Published application - Kind: A1 - Application number: 15/233,161 - Filed: 2016-08-10 - Published: 2017-09-07 - Earliest claimed: 2016-03-07 - Assignees: Boe Technology Group Co., Ltd. - Applicants: Boe Technology Group Co., Ltd. - Inventors: Yanliu SUN - Web page: https://patentgrep.com/patent/US20170256751A1 ## CPC - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/122: Pixel-defining structures or layers, e.g. banks - H10K 59/8791: {Arrangements for improving contrast, e.g. preventing reflection of ambient light} - H10K 59/1201: {Manufacture or treatment} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract A display panel and a manufacturing method thereof and a display device are disclosed. The display panel includes a light emitting layer and a light filter pattern corresponding to the light emitting layers. The light filter pattern is arranged on the corresponding light emitting layer, the light filter pattern has a specific transmission spectrum; the light filter pattern is configured for filtering out the light corresponding to a spectrum outside the specific transmission spectrum and transmitting the light corresponding to the specific transmission spectrum. The display panel can have a decreased reflectivity of the ambient light and an increased contrast ratio. ## Claims ### Claim 1 A display panel, comprising: a light emitting layer and a light filter pattern corresponding to the light emitting layer, wherein each of the light emitting layers is configured to emit monochromatic light, and the light emitting layers comprises at least a first emitting layer and a second emitting layer, the monochromatic light emitted by the first emitting layer are different from the monochromatic light emitted by the second emitting layer; the light filter pattern is located at a light-emitting side of the light emitting layer, and the light filter pattern has a specific transmission spectrum; and the light filter pattern is configured for filtering out light corresponding to a spectrum outside the specific transmission spectrum and transmitting light corresponding to the specific transmission spectrum. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein, an absolute value of difference between a peak value of the specific transmission spectrum of the light filter pattern and a peak value of an emission spectrum of the light emitting layer is no more than a first set value. ### Claim 3 (depends on 2) The display panel according to claim 2, wherein, the first set value is 5 nm. ### Claim 4 (depends on 2) The display panel according to claim 2, wherein, an absolute value of difference between an FWHM (full width at half maximum) value of the specific transmission spectrum of the light filter pattern and an FWHM value of the emission spectrum of the light emitting layer is no more than a second set value. ### Claim 5 (depends on 4) The display panel according to claim 4, wherein, the second set value is 40 nm. ### Claim 6 (depends on 4) The display panel according to claim 4, wherein, the difference between the peak value of the specific transmission spectrum of the light filter pattern and the peak value of the emission spectrum of the light emitting layer is zero, and the difference between the FWHM value of the specific transmission spectrum of the light filter pattern and the FWHM value of the emission spectrum of the light emitting layer is zero. ### Claim 7 (depends on 1) The display panel according to claim 1, further comprising an encapsulation layer, wherein, the encapsulation layer is arranged on the light emitting layer, and the light filter pattern is arranged on the encapsulation layer. ### Claim 8 (depends on 1) The display panel according to claim 1, further comprising a first electrode, wherein, the first electrode is arranged below the light emitting layer; and the first electrode has reflectivity and is configured to reflect incident light. ### Claim 9 (depends on 1) The display panel according to claim 1, further comprising a pixel defining layer, wherein, the light emitting layer is arranged in the pixel defining layer, the pixel defining layer at both sides of the light emitting layer form a groove above the light emitting layer, and the light filter pattern corresponding to the light emitting layer is located in the groove. ### Claim 10 (depends on 8) The display panel according to claim 8, further comprising a second electrode, wherein, the second electrode is arranged on the light emitting layer. ### Claim 11 (depends on 1) A display device, comprising: the display panel according to claim 1. ### Claim 12 A method of manufacturing a display panel, comprising: forming a light emitting layer, wherein each of the light emitting layers is configured to emit monochromatic light, and the light emitting layers comprises at least a first emitting layer and a second emitting layer, the monochromatic light emitted by the first emitting layer are different from the monochromatic light emitted by the second emitting layer; and forming a light filter pattern, wherein the light filter pattern is located at a light-emitting side of the light emitting layer, the light filter pattern has a specific transmission spectrum, and the light filter pattern is configured for filtering out light corresponding to a spectrum outside the specific transmission spectrum and transmitting the light corresponding to the specific transmission spectrum. ### Claim 13 (depends on 12) The method according to claim 12, wherein, the light filter pattern is formed through a vapor deposition process or a printing process. ### Claim 14 (depends on 12) The method according to claim 12, after forming the light emitting layer, further comprising: forming an encapsulation layer, wherein, the light filter pattern is arranged on the encapsulation layer. ### Claim 15 (depends on 12) The method according to claim 12, before forming the light emitting layer, further comprising: forming a pixel defining layer, wherein, the light emitting layer is arranged in the pixel defining layer, the pixel defining layer at both sides of the light emitting layer form a groove above the light emitting layer, and the light filter pattern corresponding to the light emitting layer is located in the groove. ### Claim 16 (depends on 12) The method according to claim 12, further comprising: providing a backplane, wherein, the light emitting layer is formed on the backplane. ### Claim 17 (depends on 16) The method according to claim 16, further comprising: forming a first electrode on the backplane, wherein, the light emitting layer is formed on the first electrode, and the first electrode has reflectivity and is configured to reflect the received light. ### Claim 18 (depends on 17) The method according to claim 17, further comprising: forming a second electrode on the light emitting layer. ### Claim 19 A display panel, comprising: a light emitting layer and a light filter pattern corresponding to the light emitting layer, wherein the light filter pattern is located at a light-emitting side of the light emitting layer, and the light filter pattern has a specific transmission spectrum; the light filter pattern is configured for filtering out light corresponding to a spectrum outside the specific transmission spectrum and transmitting light corresponding to the specific transmission spectrum; an absolute value of difference between a peak value of the specific transmission spectrum of the light filter pattern and a peak value of an emission spectrum of the light emitting layer is no more than a first set value, and the first set value is 5 nm.