# US 11,307,472 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 11,307,472 B2 - Document ID: US11307472B2 - Status: Granted - Kind: B2 - Application number: 17/033,817 - Filed: 2020-09-27 - Published: 2021-01-14 - Granted: 2022-04-19 - Earliest claimed: 2018-10-08 - Assignees: Hkc Corporation Limited - Applicants: Hkc Corporation Limited - Inventors: Huailiang He - Web page: https://patentgrep.com/patent/US11307472B2 ## CPC - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G02F 1/133753: {with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle} - G02F 1/133757: {with different alignment orientations} - G02F 1/134309: {characterised by their geometrical arrangement} - G02F 1/13439: {characterised by their electrical, optical, physical properties; materials therefor; method of making} - G09G 3/3607: {for displaying colours or for displaying grey scales with a specific pixel layout, e.g. using sub-pixels (display of colours in flat matrix panels other than liquid crystal displays G09G3/2003; grey scales specific for television H04N3/127)} - G09G 3/3696: {Generation of voltages supplied to electrode drivers} - G02F 1/134345: {Subdivided pixels, e.g. for grey scale or redundancy} - G09G 2300/0447: for multi-domain technique to improve the viewing angle in a liquid crystal display, such as multi-vertical alignment [MVA] - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2320/0242: Compensation of deficiencies in the appearance of colours - G09G 2320/0673: for control of gamma adjustment, e.g. selecting another gamma curve - 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 - G09G: ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION (arrangements for transferring data between digital computers and displays G06F3/14; static indicating arrangements comprising an association of a number of separate sources or light control cells G09F9/00; static indicating arrangements comprising integral associations of a number of light sources H01J, H01K, H10H, H05B33/12; scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission, details thereof H04N1/00) ## Abstract A display panel and a display device are provided. The display panel includes a plurality of pixel units, which includes a first pixel unit and a second pixel unit. The first and second pixel units are adjacently arranged in a vertical direction. The first pixel unit includes a first subpixel, and the second pixel unit includes a second subpixel corresponding to the first subpixel. The first subpixel includes a first region and a second region which are vertically arranged. The second region arranged closer to the second subpixel with respect to the first region includes a third region. A transmittance of the first region is smaller than a transmittance of the second region, and the ratio of the area of the second region to the area of the third region is smaller than or equal to 4:6 and greater than or equal to 3:7. ## Claims ### Claim 1 A display panel, comprising: a plurality of pixel units, comprising a first pixel unit and a second pixel unit adjacently arranged in a vertical direction, the first pixel unit comprising a first subpixel, and the second pixel unit comprising a second subpixel corresponding to the first subpixel; wherein, the first subpixel is divided into a first region and a second region vertically arranged, the second subpixel is a third region as a whole, the first region, the second region, and the third region are four-domain-regions, and the second region is arranged closer to the second subpixel with respect to the first region; and a transmittance of the first region is smaller than a transmittance of the second region, and a ratio of an area of the second region to an area of the third region is smaller than or equal to 4:6 and greater than or equal to 3:7. ### Claim 2 (depends on 1) The display panel according to claim 1, wherein an area of the first region is larger than the area of the second region and is smaller than the area of the third region. ### Claim 3 (depends on 2) The display panel according to claim 2, wherein a ratio of the area of the second region to the area of the first region is smaller than or equal to 4:6 and greater than or equal to 3:7. ### Claim 4 (depends on 1) The display panel according to claim 1, wherein a total of the area of the first region and the area of the second region is equal to the area of the third region. ### Claim 5 (depends on 1) The display panel according to claim 1, wherein a transmittance of the third region is larger than the transmittance of the first region and smaller than the transmittance of the second region. ### Claim 6 (depends on 5) The display panel according to claim 5, wherein pixel electrodes of the first region, the second region and the third region are respectively arranged in stripes, and included angles formed between a horizontal direction and extending directions of the pixel electrodes in mutually corresponding domains of the first region, the second region and the third region are respectively α, β, γ; and α, β and γ meet a requirement of |β−45°|<|γ−45°|<|α−45°|. ### Claim 7 (depends on 6) The display panel according to claim 6, wherein α, β, and γ are all within a range from 0 degree to 45 degrees. ### Claim 8 (depends on 5) The display panel according to claim 5, wherein a brightness of the first subpixel is consistent with a brightness of the second subpixel, when the display panel is at a high gray scale. ### Claim 9 (depends on 1) The display panel according to claim 1, wherein the first subpixel is arranged corresponding to a switch unit. ### Claim 10 (depends on 1) The display panel according to claim 1, wherein a thin film transistor is arranged in each of subpixels. ### Claim 11 A display panel, comprising: a plurality of pixel units, comprising a first pixel unit and a second pixel unit adjacently arranged in a vertical direction, the first pixel unit comprising a first subpixel, and the second pixel unit comprising a second subpixel corresponding to the first subpixel; the first subpixel being divided into a first region and a second region vertically arranged, the second subpixel being a third region as a whole, the second region being arranged closer to the second subpixel with respective to the first region; the first region, the second region and the third region being all four-domain-regions, a voltage of the first subpixel being controlled to be larger than a voltage of the second subpixel; and a transmittance of the first region being smaller than a transmittance of the second region, and a ratio of an area of the second region to an area of the third region being smaller than or equal to 4:6 and greater than or equal to 3:7. ### Claim 12 A display device, comprising a display panel, the display panel comprising: a plurality of pixel units, comprising a first pixel unit and a second pixel unit adjacently arranged in a vertical direction, the first pixel unit comprising a first subpixel, and the second pixel unit comprising a second subpixel corresponding to the first subpixel; the first subpixel being divided into a first region and a second region vertically arranged, the second subpixel being a third region as a whole, the first region, the second region, and the third region being all four-domain-regions, and the second region being arranged closer to the second subpixel with respect to the first region; and a transmittance of the first region being smaller than a transmittance of the second region, and the ratio of an area of the second region to an area of the third region being smaller than or equal to 4:6 and greater than or equal to 3:7. ### Claim 13 (depends on 12) The display device according to claim 12, wherein an area of the first region is larger than the area of the second region and is smaller than the area of the third region. ### Claim 14 (depends on 13) The display device according to claim 13, wherein a ratio of the area of the second region to the area of the first region is smaller than or equal to 4:6 and greater than or equal to 3:7. ### Claim 15 (depends on 12) The display device according to claim 12, wherein a total of the area of the first region and the area of the second region is equal to the area of the third region. ### Claim 16 (depends on 12) The display device according to claim 12, wherein a transmittance of the third region is larger than the transmittance of the first region and is smaller than the transmittance of the second region. ### Claim 17 (depends on 16) The display device according to claim 16, wherein pixel electrodes of the first region, the second region and the third region are respectively arranged in stripes, and included angles formed between a horizontal direction and extending directions of the pixel electrodes in mutually corresponding domains of the first region, the second region and the third region are respectively α, β, γ; and α, β and γ meet a requirement of |β−45°|<|γ−45°|<|α−45°|. ### Claim 18 (depends on 16) The display device according to claim 16, wherein a brightness of the first subpixel is consistent with a brightness of the second subpixel, when the display panel is at a high gray scale. ### Claim 19 (depends on 12) The display device according to claim 12, wherein the first subpixel is arranged corresponding to a switch unit. ### Claim 20 (depends on 12) The display device according to claim 12, wherein a thin film transistor is arranged in each of subpixels.