# US 10,769,985 B1 · Light-emitting device display > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,769,985 B1 - Document ID: US10769985B1 - Status: Granted - Kind: B1 - Application number: 16/371,145 - Filed: 2019-04-01 - Published: 2020-10-01 - Granted: 2020-09-08 - Earliest claimed: 2019-04-01 - Assignees: Mikro Mesa Technology Co., Ltd. - Applicants: Mikro Mesa Technology Co., Ltd. - Inventors: Li-Yi Chen - Web page: https://patentgrep.com/patent/US10769985B1 ## CPC - G09G 3/32: semiconductive, e.g. using light-emitting diodes [LED] - H10W 90/00: Package configurations - G09G 3/2003: {Display of colours (specific for liquid crystal displays G09G3/3607)} - H10H 29/142: {Two-dimensional arrangements, e.g. asymmetric LED layout} - 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 2300/06: Passive matrix structure, i.e. with direct application of both column and row voltages to the light emitting or modulating elements, other than LCD or OLED - G09G 2310/0267: Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays - G09G 2310/0275: Details of drivers for data electrodes, other than drivers for liquid crystal, plasma or OLED displays, not related to handling digital grey scale data or to communication of data to the pixels by means of a current - G09G 2320/0209: Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display - G09G 2320/0238: Improving the black level - G09G 2320/066: for control of contrast - G09G 2380/06: Remotely controlled electronic signs other than labels - 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) - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS ## Abstract A light-emitting device display comprising a first light-emitting device and a second light emitting device is provided. The first light-emitting device and the second light-emitting device have a first forward voltage and a second forward voltage respectively, and the second forward voltage is higher than the first forward voltage. A first scan voltage and a second scan voltage is respectively provided to the first light-emitting device and the second light-emitting device. The first scan voltage is switched between a first scan-on voltage and a first scan-off voltage. The second scan voltage is switched between a second scan-on voltage and a second scan-off voltage. An absolute value of a difference between the second scan-on voltage and the second scan-off voltage is greater than an absolute value of a difference between the first scan-on voltage and the first scan-off voltage. ## Claims ### Claim 1 A light-emitting device display, comprising: a pixel comprising: a first light-emitting device having a first forward voltage; a second light-emitting device having a second forward voltage, wherein the second forward voltage is higher than the first forward voltage; a first type scan line electrically connected to and in direct contact with a first end of the first light-emitting device, wherein the first type scan line is configured to receive a first scan voltage and provide the first scan voltage to the first light-emitting device, and the first scan voltage is switched between a first scan-on voltage and a first scan-off voltage; a second type scan line electrically connected to and in direct contact with a first end of the second light-emitting device, wherein the second type scan line is configured to receive a second scan voltage and provide the second scan voltage to the second light-emitting device, the second scan voltage is switched between a second scan-on voltage and a second scan-off voltage, and an absolute value of a difference between the second scan-on voltage and the second scan-off voltage is greater than an absolute value of a difference between the first scan-on voltage and the first scan-off voltage; and two data lines electrically connected to and in contact with a second end of the first light-emitting device and a second end of the second light-emitting device, respectively, wherein one of the data lines is configured to receive a first data voltage and provide the first data voltage to the first light-emitting device, another of the data lines is configured to receive a second data voltage and provide the second data voltage to the second light-emitting device, the first data voltage is higher than or equal to the first scan voltage and the second scan voltage, and the second data voltage is higher than or equal to the first scan voltage and the second scan voltage. ### Claim 2 (depends on 1) The light-emitting device display of claim 1, wherein an upper limit of a difference between the first data voltage and the first scan-off voltage and an upper limit of a difference between the second data voltage and the second scan-off voltage are less than or equal to the first forward voltage. ### Claim 3 (depends on 1) The light-emitting device display of claim 1, wherein an upper limit of a difference between the second data voltage and the second scan-off voltage is less than or equal to the second forward voltage. ### Claim 4 (depends on 1) The light-emitting device display of claim 1, wherein an upper limit of a difference between the first data voltage and the first scan-off voltage is less than or equal to the first forward voltage. ### Claim 5 (depends on 1) The light-emitting device display of claim 1, wherein the first data voltage and the second data voltage are higher than or equal to a zero voltage. ### Claim 6 (depends on 1) The light-emitting device display of claim 1, wherein the second light-emitting device is a blue light-emitting diode. ### Claim 7 (depends on 1) The light-emitting device display of claim 1, wherein the first light-emitting device is a red light-emitting diode. ### Claim 8 (depends on 1) The light-emitting device display of claim 1, wherein the pixel further comprises a third data line and a third light-emitting device having a third forward voltage higher than the first forward voltage, the second type scan line is electrically connected to and in contact with a first end of the third light-emitting device, the third data line is configured to receive a third data voltage and provide the third data voltage to the third light-emitting device, the third data line is electrically connected to a second end of the third light-emitting device, and the third data voltage is higher than or equal to the first scan voltage and the second scan voltage. ### Claim 9 (depends on 8) The light-emitting device display of claim 8, wherein an upper limit of a difference between the third data voltage and the second scan-off voltage is less than or equal to the smaller one of the second forward voltage and the third forward voltage. ### Claim 10 (depends on 8) The light-emitting device display of claim 8, wherein an upper limit of a difference between the third data voltage and the second scan-off voltage is less than or equal to the third forward voltage. ### Claim 11 (depends on 8) The light-emitting device display of claim 8, wherein an upper limit of a difference between the third data voltage and the second scan-off voltage is less than or equal to the first forward voltage. ### Claim 12 (depends on 8) The light-emitting device display of claim 8, wherein the third data voltage is higher than or equal to a zero voltage. ### Claim 13 (depends on 8) The light-emitting device display of claim 8, wherein the third light-emitting device is a green light-emitting diode.