# US 2017/0256731 A1 · Display panel > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0256731 A1 - Document ID: US20170256731A1 - Status: Published application - Kind: A1 - Application number: 14/891,226 - Filed: 2015-09-16 - Published: 2017-09-07 - Earliest claimed: 2015-09-07 - Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd.; Wuhan China Star Optoelectronics Technology Co., Ltd. - Applicants: Shenzhen China Star Optoelectronics Technology Co., Ltd.; Wuhan China Star Optoelectronics Technology Co., Ltd. - Inventors: Junying MU - Web page: https://patentgrep.com/patent/US20170256731A1 ## CPC - H10K 59/353: {characterised by the geometrical arrangement of the RGB subpixels} - H10K 50/11: characterised by the electroluminescent [EL] layers - H10K 50/13: comprising stacked EL layers within one EL unit - H10K 50/15: Hole transporting layers - H10K 50/16: Electron transporting layers - H10K 50/171: {Electron injection layers} - H10K 59/12: Active-matrix OLED [AMOLED] displays - H10K 59/80516: {combined with auxiliary electrodes, e.g. ITO layer combined with metal lines} - H10K 2101/10: Triplet emission - H10K 2101/27: {Combination of fluorescent and phosphorescent emission} - H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES ## Abstract The present invention discloses a display panel, which includes a display unit. The display unit includes an anode layer, a hole injection layer, a hole transport layer, a luminescent material layer, an electron transporting layer, an electron injection layer, a cathode layer. The luminescent material layer includes the first luminescent material block, the second luminescent material block, and the third luminescent material block. The first luminous material block and the second luminous material block are partially overlapped, and the second luminous material block and the third luminescent material block are partially overlapped. The present invention is beneficial to producing a pixel having a smaller dimension in the display panel. ## Claims ### Claim 1 A display panel comprising: at least a display unit, the display unit being divided into a first region, a second region, a third region, a fourth region, and a fifth region, wherein the display unit comprises: an anode layer comprising: a first anode provided in the first region; a second anode provided in the second region; a third anode provided in the third region; a fourth anode provided in the fourth region; and a fifth anode provided in the fifth region; a hole injection layer; a hole transport layer; a luminescent material layer including: a first light-emitting section located in the first region, the first light-emitting section being a portion located in the first region of a first luminescent material block; a second light-emitting section located in the second region, the second light light-emitting section being formed by stacking a portion located in the second region of the first luminescent material block and a portion located in the second region of a second luminescent material block; a third light-emitting section located in the third region, the third light-emitting section being a portion located in the third region of the second luminescent material block; a fourth light-emitting section located in the fourth region, the fourth light-emitting section being formed by stacking a portion located in the fourth region of the second luminescent material block and a portion located in the fourth region of a third luminescent material block; and a fifth light-emitting section located in the fifth region, the fifth light-emitting section being a portion located in the fifth region of the third luminescent material block; an electron transporting layer; an electron injection layer; and a cathode layer; the display unit further comprising a switching component, which includes a first switch thin film transistor (TFT) connected to the first anode; a second switch TFT connected to the second anode; a third switch TFT connected to the third anode; a fourth switch TFT connected to the fourth anode; and a fifth switch TFT connected to the fifth anode; wherein the first luminescent material block is located in the first region and second region, the second luminescent material is located in the second region, the third region, and the fourth region, as well as the third luminescent material is located in the fourth region and the fifth region. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein the luminescent material layer includes a first layer where the first luminescent material block, the second luminescent material block, and the third luminescent material block are all located. ### Claim 3 (depends on 2) The display panel according to claim 2, wherein a first gap exists where the portion of the first luminescent material block is located in the second region and a second gap exists where the portion of the second luminescent material block is located in the second region, in which the first gap and the second gap are arranged to face to each other; a third gap exists where the portion of the second luminescent material block is located in the fourth region and a fourth gap exists where the portion of the third luminescent material block is located in the fourth region, in which the third gap and the fourth gap are arranged to face to each other. ### Claim 4 (depends on 1) The display panel according to claim 1, wherein the luminescent material layer includes a second layer and a third layer, and the first luminescent material block and the third luminescent material block are both located in the second layer while the second luminescent material block is located in the third layer. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein the luminescent material layer includes a fourth layer, a fifth layer, and a sixth layer, and the first luminescent material block is located in the fourth layer, the second luminescent material block is located in the fifth layer, and the third luminescent material block is located in the sixth layer. ### Claim 6 (depends on 1) The display panel according to claim 1, wherein the first luminescent material block, the second luminescent material block, or the third luminescent material block is respectively one among a red luminescent material block, a green luminescent material block, and a blue luminescent material block; and the first luminescent material block, the second luminescent material block, and the third luminescent material block are different from each other. ### Claim 7 (depends on 6) The display panel according to claim 6, wherein the first luminescent material is one of the red luminescent material block and the green luminescent material block, the third luminescent material block is the remaining one of the red luminescent material block and the green luminescent material block, and the second luminescent material block is the blue luminescent material block; the first luminescent material block, the second luminescent material block, and the third luminescent material block are made of a host material and a luminescent material, which is doped into the host material; the host materials in the first luminescent material block, the second luminescent material block, and the third luminescent material block are all the same, and the luminescent material in the first luminescent material block and the luminescent material in the third luminescent material block are phosphorescent materials while the luminescent material in the second luminescent material block is a fluorescent material. ### Claim 8 A display panel comprising: at least a display unit, the display unit being divided into a first region, a second region, a third region, a fourth region, and a fifth region, wherein the display unit comprises: an anode layer including: a first anode provided in the first region; a second anode provided in the second region; a third anode provided in the third region; a fourth anode provided in the fourth region; and a fifth anode provided in the fifth region; a hole injection layer; a hole transport layer; a luminescent material layer including: a first light-emitting section located in the first region, the first light-emitting section being a portion located in the first region of a first luminescent material block; a second light-emitting section located in the second region, the second light light-emitting section being formed by stacking a portion located in the second region of the first luminescent material block and a portion located in the second region of a second luminescent material block; a third light-emitting section located in the third region, the third light-emitting section being a portion located in the third region of the second luminescent material block; a fourth light-emitting section located in the fourth region, the fourth light-emitting section being formed by stacking a portion located in the fourth region of the second luminescent material block and a portion located in the fourth region of a third luminescent material block; and a fifth light-emitting section located in the fifth region, the fifth light-emitting section being a portion located in the fifth region of the third luminescent material block; an electron transporting layer; an electron injection layer; and a cathode layer. ### Claim 9 (depends on 8) The display panel according to claim 8, wherein the first luminescent material block is located in the first region and second region; the second luminescent material is located in the second region, the third region, and the fourth region; and the third luminescent material is located in the fourth region and the fifth region. ### Claim 10 (depends on 8) The display panel according to claim 8, wherein the luminescent material layer includes a first layer where the first luminescent material block, the second luminescent material block, and the third luminescent material block are all located. ### Claim 11 (depends on 10) The display panel according to claim 10, wherein a first gap exists where the portion of the first luminescent material block is located in the second region and a second gap exists where the portion of the second luminescent material block is located in the second region, in which the first gap and the second gap are arranged to face to each other; a third gap exists where the portion of the second luminescent material block is located in the fourth region and a fourth gap exists where the portion of the third luminescent material block is located in the fourth region, in which the third gap and the fourth gap are arranged to face to each other. ### Claim 12 (depends on 8) The display panel according to claim 8, wherein the luminescent material layer includes a second layer and a third layer, and the first luminescent material block and the third luminescent material block are both located in the second layer while the second luminescent material block is located in the third layer. ### Claim 13 (depends on 8) The display panel according to claim 8, wherein the luminescent material layer includes a fourth layer, a fifth layer, and a sixth layer, and the first luminescent material block is located in the fourth layer, the second luminescent material block is located in the fifth layer, and the third luminescent material block is located in the sixth layer. ### Claim 14 (depends on 8) The display panel according to claim 8, wherein the first luminescent material block, the second luminescent material block, or the third luminescent material block is respectively one among a red luminescent material block, a green luminescent material block, and a blue luminescent material block; and the first luminescent material block, the second luminescent material block, and the third luminescent material block are different from each other. ### Claim 15 (depends on 14) The display panel according to claim 14, wherein the first luminescent material is one of the red luminescent material block and the green luminescent material block, the third luminescent material block is the remaining one of the red luminescent material block and the green luminescent material block, and the second luminescent material block is the blue luminescent material block. ### Claim 16 (depends on 15) The display panel according to claim 15, wherein the first luminescent material block, the second luminescent material block, and the third luminescent material block are made of a host material and a luminescent material, which is doped onto the host material; wherein the host materials in the first luminescent material block, the second luminescent material block, and the third luminescent material block are all the same, and the luminescent material in the first luminescent material block and the luminescent material in the third luminescent material block are phosphorescent materials while the luminescent material in the second luminescent material block is a fluorescent material. ### Claim 17 (depends on 8) The display panel according to claim 8, wherein the display unit further comprises a switching component, which includes a first switch thin film transistor (TFT) connected to the first anode; a second switch TFT connected to the second anode; a third switch TFT connected to the third anode; a fourth switch TFT connected to the fourth anode; and a fifth switch TFT connected to the fifth anode. ### Claim 18 (depends on 17) The display panel according to claim 17, wherein the switching component layer is disposed between the base substrate and the anode layer. ### Claim 19 (depends on 8) The display panel according to claim 8, wherein the hole injection layer is disposed between the anode layer and the hole transport layer, the luminescent material layer is disposed between the hole transport layer and the electron transporting layer, and the electron injection layer is disposed between the electron transport layer and the cathode layer. ### Claim 20 (depends on 8) The display panel according to claim 8, wherein the first luminescent material block, the second luminescent material block, and the third luminescent material block are formed by a mask process, and a mask corresponding to the mask process is a fine metal mask.