# US 11,908,399 B2 · Column interchangeable demultiplexer structure in displays > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,908,399 B2 - Document ID: US11908399B2 - Status: Granted - Kind: B2 - Application number: 17/905,427 - Filed: 2020-11-25 - Published: 2023-04-20 - Granted: 2024-02-20 - Earliest claimed: 2020-11-25 - Assignees: Google Inc. - Applicants: Google LLC - Inventors: Sangmoo Choi - Web page: https://patentgrep.com/patent/US11908399B2 ## CPC - G09G 3/20: for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix {no fixed position being assigned to or needed to be assigned to the individual characters or partial characters} - G09G 3/3208: organic, e.g. using organic light-emitting diodes [OLED] - G09G 3/3225: using an active matrix - G09G 2300/0413: Details of dummy pixels or dummy lines in flat panels - G09G 2300/0426: Layout of electrodes and connections - G09G 2300/0452: Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components - G09G 2310/0297: Special arrangements with multiplexing or demultiplexing of display data in the drivers for data electrodes, in a pre-processing circuitry delivering display data to said drivers or in the matrix panel, e.g. multiplexing plural data signals to one D/A converter or demultiplexing the D/A converter output to multiple columns - G09G 2310/08: Details of timing specific for flat panels, other than clock recovery - G09G 2330/021: Power management, e.g. power saving - 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 includes subpixel emissive areas of first, second, and third colors arranged in an array that includes rows and columns. The display also includes scan lines, column lines, and electronic subpixel circuits arranged in the array, with each subpixel circuit in a column of the array being electrically connected to a same column line and each electronic subpixel circuit configured for receiving electronic signals from a scan line and from a column line and for converting the received signals into a current signal provided to one of the subpixel emissive areas to drive light emission from the subpixel emissive area. The display further includes demultiplexer (DEMUX) switches, where every other column line of the columns lines is configured to be connected to at least two outputs from a column line driver through the DEMUX switches. ## Claims ### Claim 1 A display device comprising: a plurality of subpixel emissive areas of a first color; a plurality of subpixel emissive areas of a second color; a plurality of subpixel emissive areas of a third color, wherein the plurality of subpixel emissive areas of the first, second, and third colors are arranged in an array, the array having a plurality of rows and a plurality of columns, with rows of the array including subpixel emissive areas arranged in a repeating pattern of subpixel emissive areas of the first color, the second color, the third color, and the second color, and with alternating columns of the array including subpixel emissive areas: (a) arranged in a repeating pattern of a subpixel emissive area of the first color and a subpixel emissive areas of the third color, and (b) including only subpixel emissive areas of the second color; a plurality of scan lines; a plurality of column lines; a plurality of electronic subpixel circuits arranged in the array, each electronic subpixel circuit in a column of the array being electrically connected to a same column line, and each electronic subpixel circuit configured for receiving electronic signals from a scan line and from a column line and for converting the received signals into a current signal provided to one of the subpixel emissive areas to drive light emission from the subpixel emissive area, wherein electronic subpixel circuits arranged in a column of the array drive columns of emissive areas having only one color; a plurality of demultiplexer (DEMUX) switches, wherein every other column line of the plurality of column lines is configured to be connected to at least two outputs from a column line driver through the plurality of DEMUX switches; and a plurality of subpixel circuit output ports, wherein each electronic subpixel circuit of the plurality of electronic subpixel circuits is electrically connected to an emissive area by a subpixel circuit output port of the plurality of subpixel circuit output ports, wherein for each subpixel emissive area of the second color, the electronic subpixel circuit that provides the current signal to the emissive area of the second color, and the output port that electrically connects the subpixel area of the second color to the electronic subpixel circuit that provides the current signal to the emissive areas of the second color are located in a same row and in a same column, and wherein, in every other row, each subpixel emissive area of the first and third colors is located in a different column from the column in which the electronic subpixel circuit that provides the current signal to the emissive area is located, and in other rows each subpixel emissive area of the first and third colors is located in a same column as the electronic subpixel circuit that provides the current signal to the emissive area. ### Claim 2 (depends on 1) The display device of claim 1, wherein column lines between the column lines that are configured to be connected to at least two outputs from the column line driver through the plurality of DEMUX switches are configured to be connected to only one output from the column line driver. ### Claim 3 (depends on 2) The display device of claim 2, wherein the column lines that are configured to be connected to at least two outputs from the column line driver through the plurality of DEMUX switches are connected to electronic subpixel circuits of the plurality of electronic subpixel circuits that drive light emission from columns of subpixel emissive areas arranged in the repeating pattern of a subpixel emissive area of the first color and a subpixel emissive area of the third color. ### Claim 4 (depends on 1) The display device of claim 1, wherein, for each of the every other column lines, a first DEMUX switch of the plurality of DEMUX switches is configured to connect the column line to an output from the column line driver when a scan line that provides an ON electronic signal is an even numbered scan line and to disconnect the column line to the output from the column line driver when a scan line that provides an ON electronic signal is an odd numbered scan line. ### Claim 5 (depends on 4) The display device of claim 4, wherein, for each of the every other column lines, a second DEMUX switch of the plurality of DEMUX switches is configured to connect the column line to an output from the column line driver when a scan line that provides an ON electronic signal is the odd numbered scan line and to disconnect the column line to the output from the column line driver when a scan line that provides an ON electronic signal is the even numbered scan line. ### Claim 6 (depends on 1) The display device of claim 1, wherein the DEMUX switches are configured to connect an output from the column line driver to two different column lines, and wherein each of the two different column lines is connected to electronic subpixel circuits that drive subpixel emissive areas arranged in the repeating pattern of a subpixel emissive area of the first color and a subpixel emissive areas of the third color. ### Claim 7 (depends on 1) The display device of claim 1, wherein the DEMUX switches are configured to connect an output from the column line driver to three different column lines, and wherein two of the three different column lines is connected to electronic subpixel circuits that drive subpixel emissive areas arranged in the repeating pattern of a subpixel emissive area of the first color and a subpixel emissive areas of the third color and one of the different column lines is connected to electronic subpixel circuits that drive subpixel emissive areas that include only subpixel emissive areas of the second color. ### Claim 8 (depends on 1) The display device of claim 1, wherein the emissive areas of the first, second, and third colors include organic light emitting diodes, wherein the first color includes red (R), the second color includes green (G), and the third color includes blue (B), and wherein the plurality of subpixel emissive areas of the first, second, and third colors are arranged in a Pentile RGBG array. ### Claim 9 (depends on 1) The display device of claim 1, wherein, in the every other rows, the subpixel output ports that electrically connect an emissive area of a first or third color to an electronic subpixel circuit, extend over a distance that is greater than a width of one electronic subpixel circuit. ### Claim 10 (depends on 1) The display device of claim 1, wherein each of the electronic subpixel circuits includes a transistor configured for providing a current to a subpixel emissive area in response to one or more signals provided on a scan line and/or column line. ### Claim 11 (depends on 10) The display device of claim 10, wherein an amount of light emitted from the subpixel emissive area is based on the provided current. ### Claim 12 (depends on 1) The display device of claim 1, wherein the plurality of rows includes more than 1300 rows, and wherein the plurality of columns includes more than 700 columns. ### Claim 13 A display device comprising: a plurality of subpixel emissive areas of a first color; a plurality of subpixel emissive areas of a second color; a plurality of subpixel emissive areas of a third color, wherein the plurality of subpixel emissive areas of the first, second, and third colors are arranged in an array, the array having a plurality of rows and a plurality of columns, with rows of the array including subpixel emissive areas arranged in a repeating pattern of subpixel emissive areas of the first color, the second color, the third color, and the second color, and with alternating columns of the array including subpixel emissive areas: (a) arranged in a repeating pattern of a subpixel emissive area of the first color and a subpixel emissive areas of the third color, and (b) including only subpixel emissive areas of the second color; a plurality of scan lines; a plurality of column lines; a plurality of electronic subpixel circuits arranged in the array, each electronic subpixel circuit in a column of the array being electrically connected to a same column line, and each electronic subpixel circuit configured for receiving electronic signals from a scan line and from a column line and for converting the received signals into a current signal provided to one of the subpixel emissive areas to drive light emission from the subpixel emissive area, wherein electronic subpixel circuits arranged in a column of the array drive columns of emissive areas having only one color; a plurality of demultiplexer (DEMUX) switches, wherein every other column line of the plurality of column lines is configured to be connected to at least two outputs from a column line driver through the plurality of DEMUX switches; and a plurality of subpixel circuit output ports, wherein each electronic subpixel circuit of the plurality of electronic subpixel circuits is electrically connected to an emissive area by a subpixel circuit output port of the plurality of subpixel circuit output ports, wherein, in every other row, each subpixel emissive area of the first color and each subpixel emissive area of the third color is located in a column having a higher column number higher than a column number of the electronic subpixel circuit that provides the current signal to the subpixel emissive area. ### Claim 14 (depends on 13) The display device of claim 13, wherein, in the every other row, in a first column, each subpixel emissive area of the third color is located in a column having a column number that is one higher than the column number of the electronic subpixel circuit that provides the current signal to the subpixel emissive area, and wherein, in the every other row, in columns other than the first column, each subpixel emissive area of the first color and of the third color is located in a column having a column number that is two higher than the column number of the electronic subpixel circuit that provides the current signal to the subpixel emissive area. ### Claim 15 (depends on 13) The display device of claim 13, wherein, in the every other rows, for columns other than the first column, the subpixel output ports that electrically connect an emissive area of a first or third color to an electronic subpixel circuit, extend over a distance that is greater than a width of one electronic subpixel circuit. ### Claim 16 (depends on 15) The display device of claim 15, wherein the first column includes a plurality of electronic subpixel circuits but does not include subpixel emissive areas. ### Claim 17 A display device comprising: a plurality of subpixel emissive areas of a first color; a plurality of subpixel emissive areas of a second color; a plurality of subpixel emissive areas of a third color, wherein the plurality of subpixel emissive areas of the first, second, and third colors are arranged in an array, the array having a plurality of rows and a plurality of columns, with rows of the array including subpixel emissive areas arranged in a repeating pattern of subpixel emissive areas of the first color, the second color, the third color, and the second color, and with alternating columns of the array including subpixel emissive areas: (a) arranged in a repeating pattern of a subpixel emissive area of the first color and a subpixel emissive areas of the third color, and (b) including only subpixel emissive areas of the second color; a plurality of scan lines; a plurality of column lines; a plurality of electronic subpixel circuits arranged in the array, each electronic subpixel circuit in a column of the array being electrically connected to a same column line, and each electronic subpixel circuit configured for receiving electronic signals from a scan line and from a column line and for converting the received signals into a current signal provided to one of the subpixel emissive areas to drive light emission from the subpixel emissive area, wherein electronic subpixel circuits arranged in a column of the array drive columns of emissive areas having only one color; a plurality of demultiplexer (DEMUX) switches, wherein every other column line of the plurality of column lines is configured to be connected to at least two outputs from a column line driver through the plurality of DEMUX switches; and a plurality of subpixel circuit output ports, wherein each electronic subpixel circuit of the plurality of electronic subpixel circuits is electrically connected to an emissive area by a subpixel circuit output port of the plurality of subpixel circuit output ports, wherein, in every other row, each subpixel emissive area of the first color is located in a column having a column number higher than a column number of the electronic subpixel circuit that provides the current signal to the subpixel emissive area, and wherein, in rows for which each subpixel emissive area of the first color is located in a column having a column number higher than a column number of the electronic subpixel circuit that provides the current signal to the subpixel emissive area, each subpixel emissive area of the third color is located in a column having a lower column number than a column number of the electronic subpixel circuit that provides the current signal to the subpixel emissive area. ### Claim 18 A display device comprising: a plurality of subpixel emissive areas of a first color; a plurality of subpixel emissive areas of a second color; a plurality of subpixel emissive areas of a third color, wherein the plurality of subpixel emissive areas of the first, second, and third colors are arranged in an array, the array having a plurality of rows and a plurality of columns, with rows of the array including subpixel emissive areas arranged in a repeating pattern of subpixel emissive areas of the first color, the second color, the third color, and the second color, and with alternating columns of the array including subpixel emissive areas: (a) arranged in a repeating pattern of a subpixel emissive area of the first color and a subpixel emissive areas of the third color, and (b) including only subpixel emissive areas of the second color; a plurality of scan lines; a plurality of column lines; a plurality of electronic subpixel circuits arranged in the array, each electronic subpixel circuit in a column of the array being electrically connected to a same column line, and each electronic subpixel circuit configured for receiving electronic signals from a scan line and from a column line and for converting the received signals into a current signal provided to one of the subpixel emissive areas to drive light emission from the subpixel emissive area, wherein electronic subpixel circuits arranged in a column of the array drive columns of emissive areas having only one color; a plurality of demultiplexer (DEMUX) switches, wherein every other column line of the plurality of column lines is configured to be connected to at least two outputs from a column line driver through the plurality of DEMUX switches; a plurality of subpixel circuit output ports, wherein each electronic subpixel circuit of the plurality of electronic subpixel circuits is electrically connected to an emissive area by a subpixel circuit output port of the plurality of subpixel circuit output ports, wherein, in every other row, each subpixel emissive area of the first color is located in a column having a column number that is two higher than a column number of the electronic subpixel circuit that provides the current signal to the subpixel emissive area, and wherein, in rows for which each subpixel emissive area of the first color is located in a column having a column number that is two higher than a column number of the electronic subpixel circuit that provides the current signal to the subpixel emissive area, each subpixel emissive area of the third color is located in a column having a lower column number that is two lower than a column number of the electronic subpixel circuit that provides the current signal to the subpixel emissive area.