# US 2017/0285239 A1 · Self-illuminating light guide plate, backlight module, 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 2017/0285239 A1 - Document ID: US20170285239A1 - Status: Published application - Kind: A1 - Application number: 15/240,650 - Filed: 2016-08-18 - Published: 2017-10-05 - Earliest claimed: 2016-03-30 - Assignees: Le Holdings (Beijing) Co., Ltd.; Le Shi Zhi Xin Electronic Technology (Tian Jin) Limited - Applicants: Le Holdings (Beijing) Co., Ltd.; Le Shi Zhi Xin Electronic Technology (Tian Jin) Limited - Inventors: Kunpeng Zhu; Zhishuai Jia; Xianlei Meng; Jinnan Zhang; Fangdai Ye; Yingduo Bi - Web page: https://patentgrep.com/patent/US20170285239A1 ## CPC - G02B 6/0066: {characterised by the light source being coupled to the light guide} - G02B 6/00: Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings - G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS ## Abstract Disclosed are a self-illuminating light guide plate, a backlight module, and a display device. The self-illuminating light guide plate includes a substrate including at least one light incidence face provided with a white light emitting layer. The light incidence face of the substrate is provided with a white light emitting layer, so the self-illuminating light guide plate for a backlight module can act as light sources, as compared with the prior art where the LED BAR acts as light sources, the disclosure can avoid pictures of the backlight module from becoming poor due to errors in assembling the LED BAR, and further improve quality of pictures on a display device; and light emitted by the white light emitting layer can vary with shape of the substrate, so a display device with curved display surface to which the self-illuminating light guide plate is applied has a promising prospective. ## Claims ### Claim 1 A self-illuminating light guide plate, comprising a substrate comprising at least one light incidence face provided with a white light emitting layer. ### Claim 2 (depends on 1) The self-illuminating light guide plate according to claim 1, wherein the white light emitting layer comprises a first electrode thin film, a white light quantum dot material thin film, and a second electrode thin film arranged in that order on the light incidence face. ### Claim 3 (depends on 2) The self-illuminating light guide plate according to claim 2, wherein the first electrode thin film is a cathode thin film, and the second electrode thin film is an anode thin film. ### Claim 4 (depends on 3) The self-illuminating light guide plate according to claim 3, wherein the cathode thin film is a metal oxide thin film, and the anode thin film is a metal thin film. ### Claim 5 (depends on 4) The self-illuminating light guide plate according to claim 4, wherein the metal oxide thin film is an indium tin oxide thin film. ### Claim 6 (depends on 2) The self-illuminating light guide plate according to claim 2, wherein the white light quantum dot material thin film comprises a manganese cadmium sulfide (CDMnS) thin film, a cadmium selenium (CdSe) thin film, or a cadmium sulfide (CdS) thin film. ### Claim 7 (depends on 1) The self-illuminating light guide plate according to claim 1, wherein the light incidence face is an upper surface or a side end face of the substrate. ### Claim 8 (depends on 1) The self-illuminating light guide plate according to claim 1, wherein there is a protecting thin film which is a polyethylene terephthalate (PET) thin film between each light incidence face of the substrate, and the white light emitting layer. ### Claim 9 A backlight module, comprising a self-illuminating light guide plate, wherein the self-illuminating light guide plate comprises a substrate comprising at least one light incidence face provided with a white light emitting layer. ### Claim 10 (depends on 9) The backlight module according to claim 9, wherein the white light emitting layer comprises a first electrode thin film, a white light quantum dot material thin film, and a second electrode thin film arranged in that order on the light incidence face. ### Claim 11 (depends on 10) The backlight module according to claim 10, wherein the first electrode thin film is a cathode thin film, and the second electrode thin film is an anode thin film. ### Claim at position 12 11-24. (canceled) ### Claim 12 (depends on 11) The backlight module according to claim 11, wherein the cathode thin film is a metal oxide thin film, and the anode thin film is a metal thin film. ### Claim 13 (depends on 12) The backlight module according to claim 12, wherein the metal oxide thin film is an indium tin oxide thin film. ### Claim 14 (depends on 10) The backlight module according to claim 10, wherein the white light quantum dot material thin film comprises a manganese cadmium sulfide (CDMnS) thin film, a cadmium selenium (CdSe) thin film, or a cadmium sulfide (CdS) thin film. ### Claim 15 (depends on 9) The backlight module according to claim 9, wherein the light incidence face is an upper surface or a side end face of the substrate. ### Claim 16 (depends on 9) The backlight module according to claim 9, wherein there is a protecting thin film which is a polyethylene terephthalate (PET) thin film between each light incidence face of the substrate, and the white light emitting layer. ### Claim 17 A display device, comprising a backlight module comprising a self-illuminating light guide plate, wherein the self-illuminating light guide plate comprises a substrate comprising at least one light incidence face provided with a white light emitting layer. ### Claim 18 (depends on 17) The display device according to claim 17, wherein the white light emitting layer comprises a first electrode thin film, a white light quantum dot material thin film, and a second electrode thin film arranged in that order on the light incidence face. ### Claim 19 (depends on 18) The display device according to claim 18, wherein the first electrode thin film is a cathode thin film, and the second electrode thin film is an anode thin film. ### Claim 20 (depends on 19) The display device according to claim 19, wherein the cathode thin film is a metal oxide thin film, and the anode thin film is a metal thin film. ### Claim 21 (depends on 20) The display device according to claim 20, wherein the metal oxide thin film is an indium tin oxide thin film. ### Claim 22 (depends on 18) The display device according to claim 18, wherein the white light quantum dot material thin film comprises a manganese cadmium sulfide (CDMnS) thin film, a cadmium selenium (CdSe) thin film, or a cadmium sulfide (CdS) thin film. ### Claim 23 (depends on 17) The display device according to claim 17, wherein the light incidence face is an upper surface or a side end face of the substrate. ### Claim 24 (depends on 17) The display device according to claim 17, wherein there is a protecting thin film which is a polyethylene terephthalate (PET) thin film between each light incidence face of the substrate, and the white light emitting layer.