# US 10,503,000 B2 · Display panel 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 10,503,000 B2 - Document ID: US10503000B2 - Status: Granted - Kind: B2 - Application number: 15/507,600 - Filed: 2016-09-07 - Published: 2018-05-31 - Granted: 2019-12-10 - Earliest claimed: 2016-01-08 - Assignees: Boe Technology Group Co., Ltd.; Beijing Boe Optoelectronics Technology Co., Ltd. - Applicants: BOE Technology Group Co., Ltd.; Beijing BOE Optoelectronics Technology Co., Ltd. - Inventors: Wenqing Zhao; Xiaochuan Chen; Jian Gao; Qian Wang; Pengcheng Lu; Ming Yang; Rui Xu; Lei Wang; Xiaochen Niu - Web page: https://patentgrep.com/patent/US10503000B2 ## CPC - G02F 1/133504: {Diffusing, scattering, diffracting elements (associated to illuminating devices G02F1/133606)} - G02F 1/133512: {Light shielding layers, e.g. black matrix (G02F1/136209 takes precedence)} - H10K 59/38: comprising colour filters or colour changing media [CCM] - H10K 59/879: {comprising refractive means, e.g. lenses} - H10K 59/8792: {comprising light absorbing layers, e.g. black layers} - G02F 2203/34: Colour display without the use of colour mosaic 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 panel and a display device are disclosed. The display panel includes a first substrate and a second substrate which are disposed oppositely to each other, wherein a first optical film is disposed on a side of the first substrate facing away from the second substrate, a plurality of nanoscale microstructures are formed on the first optical film, and the first optical film is configured to split an incident white light into a plurality of monochromatic lights with different colors. The display panel is capable of reducing the loss of light efficiency of the display device and increasing the light extraction efficiency of the display device. ## Claims ### Claim 1 A display panel, comprising: a first substrate; a second substrate, disposed oppositely to the first substrate; a first optical film, disposed on a side of the first substrate facing away from the second substrate, and configured to be in contact with the first substrate and split a parallel incident white light into a plurality of monochromatic lights with different colors, the first optical film comprising a plurality of nanoscale grooves formed in the first optical film; and a black matrix pattern, disposed on a side of the first substrate facing towards the second substrate and configured to be in contact with the first substrate. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein a cross-section of the groove is in a shape of rectangle, taper, semi-circle or semi-ellipse. ### Claim 3 (depends on 1) The display panel according to claim 1, wherein the black matrix pattern comprises a plurality of hollows and is formed on a light emitting side of the first optical film, wherein amonochromatic light with one color is allowed to transmit one of the hollows. ### Claim 4 (depends on 3) The display panel according to claim 3, further comprising: a second optical film, which is configured to enlarge divergence angles of the monochromatic lights, wherein the second optical film is disposed on a side of the black matrix pattern facing away from the first optical film. ### Claim 5 (depends on 4) The display panel according to claim 4, wherein the second optical film is a diffusion film or a wide visual angle film. ### Claim 6 (depends on 1) The display panel according to claim 1, further comprising: a fourth optical film which is configured to adjust a light emitting direction of the monochromatic lights, wherein the fourth optical film is disposed on a light emitting side of the first optical film. ### Claim 7 (depends on 1) The display panel according to claim 1, wherein the display panel is a liquid crystal display panel. ### Claim 8 (depends on 1) The display panel according to claim 1, wherein the display panel is an OLED display panel, the first substrate is an OLED array substrate or a package substrate, a white light emitting layer is formed on the OLED array substrate, the first optical film is disposed on a light emitting side of the white light emitting layer. ### Claim 9 (depends on 8) The display panel according to claim 8, further comprising: a third optical film disposed between the white light emitting layer and the first optical film, wherein the third optical film is configured to convert divergent light emitted from the white light emitting layer into parallel light. ### Claim 10 (depends on 8) The display panel according to claim 8, further comprising: a planarization layer disposed between the first optical film and the black matrix pattern. ### Claim 11 (depends on 1) A display device, comprising: the display panel according to claim 1. ### Claim 12 (depends on 11) The display device according to claim 11, wherein the display panel is a liquid crystal display panel, and the display device further comprises a backlight module which is configured to provide a parallel light source for the liquid crystal display panel. ### Claim 13 (depends on 1) The display panel according to claim 1, wherein the display panel is an OLED display panel, the first substrate is an OLED array substrate or a package substrate, a white light emitting layer is formed on the OLED array substrate, the first optical film is disposed on a light emitting side of the white light emitting layer. ### Claim 14 (depends on 2) The display panel according to claim 2, wherein the display panel is an OLED display panel, the first substrate is an OLED array substrate or a package substrate, a white light emitting layer is formed on the OLED array substrate, the first optical film is disposed on a light emitting side of the white light emitting layer. ### Claim 15 (depends on 3) The display panel according to claim 3, wherein the display panel is an OLED display panel, the first substrate is an OLED array substrate or a package substrate, a white light emitting layer is formed on the OLED array substrate, the first optical film is disposed on a light emitting side of the white light emitting layer. ### Claim 16 (depends on 4) The display panel according to claim 4, wherein the display panel is an OLED display panel, the first substrate is an OLED array substrate or a package substrate, a white light emitting layer is formed on the OLED array substrate, the first optical film is disposed on a light emitting side of the white light emitting layer. ### Claim 17 (depends on 5) The display panel according to claim 5, wherein the display panel is an OLED display panel, the first substrate is an OLED array substrate or a package substrate, a white light emitting layer is formed on the OLED array substrate, the first optical film is disposed on a light emitting side of the white light emitting layer. ### Claim 18 A display panel, comprising: a first substrate; a second substrate, disposed oppositely to the first substrate; a liquid crystal layer, disposed between the first substrate and the second substrate; a first optical film, disposed on a side of the first substrate opposite to the liquid crystal layer, the first optical film comprising a plurality of nanoscale grooves and being configured to split a white light incident on the first optical film into a plurality of monochromatic lights with different colors; and a black matrix pattern, disposed between the first substrate and the liquid crystal layer, wherein the first optical film and the black matrix patter are located on a same side of the liquid crystal layer. ### Claim 19 (depends on 18) The display panel according to claim 18, wherein the first optical film is configured to be in contact with the first substrate, and the black matrix pattern is configured to be in contact with the first substrate.