# US 2019/0172402 A1 · Display apparatus and method of driving the same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0172402 A1 - Document ID: US20190172402A1 - Status: Published application - Kind: A1 - Application number: 16/205,529 - Filed: 2018-11-30 - Published: 2019-06-06 - Earliest claimed: 2017-12-06 - Assignees: Samsung Display Co., Ltd. - Applicants: Samsung Display Co., Ltd. - Inventors: Jungmi YUN; Minyoung PARK; Kihyun PYUN - Web page: https://patentgrep.com/patent/US20190172402A1 ## CPC - G09G 3/3406: {Control of illumination source (illumination devices structurally associated with liquid crystal cells G02F1/1336)} - 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 2310/0202: Addressing of scan or signal lines - G09G 2310/0267: Details of drivers for scan electrodes, other than drivers for liquid crystal, plasma or OLED displays - G09G 2320/0233: Improving the luminance or brightness uniformity across the screen - 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 apparatus includes a display panel, a gate driver, a data driver and a backlight assembly. The display panel includes a plurality of display blocks. The gate driver outputs a gate signal to the display panel. The data driver outputs a data voltage to the display panel. The backlight assembly provides light to the display panel. Sequences of outputting the gate signals from the gate driver to the display blocks are different from each other in adjacent frames. ## Claims ### Claim 1 A display apparatus comprising: a display panel comprising a plurality of display blocks; a gate driver which outputs a gate signal to the display panel; a data driver which outputs a data voltage to the display panel; and a backlight assembly which provides light to the display panel, wherein sequences of outputting the gate signals from the gate driver to the display blocks are different from each other in adjacent frames. ### Claim 2 (depends on 1) The display apparatus of claim 1, wherein the display block is in a first state when the backlight assembly provides the light to the display block and the gate signal is outputted to the display block, the display block is in a second state when the backlight assembly does not provide the light to the display block and the gate signal is outputted to the display block, and when the first state and the second state of the display blocks represent a periodicity, the sequences of outputting the gate signals from the gate driver to the display blocks are different from each other in the adjacent frames. ### Claim 3 (depends on 2) The display apparatus of claim 2, wherein when accumulated numbers of the second state of the display blocks are different from each other during a predetermined accumulation duration, the sequences of outputting the gate signals from the gate driver to the display blocks are different from each other in the adjacent frames. ### Claim 4 (depends on 1) The display apparatus of claim 1, wherein the gate driver receives a plurality of converted vertical start signals corresponding to the display blocks, and sequences of activation of the converted vertical start signals are different from each other in the adjacent frames. ### Claim 5 (depends on 4) The display apparatus of claim 4, further comprising: a gate turn on controller comprising: a flipflop part comprising a plurality of flipflops; and a register part comprising a plurality of registers, wherein the flipflops generate a sampling signal by sampling a driving signal of the backlight assembly using a plurality of vertical start signals, and the registers store the sampling signal. ### Claim 6 (depends on 5) The display apparatus of claim 5, wherein the gate turn on controller further comprises: a switch part comprising a plurality of switches connected between the plurality of flipflops and the plurality of registers; and a decoder which controls operations of the switches of the switch part. ### Claim 7 (depends on 6) The display apparatus of claim 6, wherein the display apparatus comprises four display blocks, the flipflop part comprises: first and second flipflops connected to each other in series; third and fourth flipflops connected to each other in series; fifth and sixth flipflops connected to each other in series; and seventh and eighth flipflops connected to each other in series, a first vertical start signal corresponding to a first display block of the four display blocks is applied to the first flipflop, and the first vertical start signal is applied to the second flipflop, a second vertical start signal corresponding to a second display block of the four display blocks is applied to the third flipflop, and the first vertical start signal is applied to the fourth flipflop, a third vertical start signal corresponding to a third display block of the four display blocks is applied to the fifth flipflop, and the first vertical start signal is applied to the sixth flipflop, and a fourth vertical start signal corresponding to a fourth display block of the four display blocks is applied to the seventh flipflop, and the first vertical start signal is applied to the eighth flipflop. ### Claim 8 (depends on 7) The display apparatus of claim 7, wherein the display panel comprises four display blocks, and the register part comprises: a first register connected to the second, fourth, sixth and eighth flipflops to store a first sampling signal of four bits, which is outputted from the second, fourth, sixth and eighth flipflops during a first duration; a second register connected to the second, fourth, sixth and eighth flipflops to store a second sampling signal of four bits, which is outputted from the second, fourth, sixth and eighth flipflops during a second duration; a third register connected to the second, fourth, sixth and eighth flipflops to store a third sampling signal of four bits, which is outputted from the second, fourth, sixth and eighth flipflops during a third duration; and a fourth register connected to the second, fourth, sixth and eighth flipflops to store a fourth sampling signal of four bits, which is outputted from the second, fourth, sixth and eighth flipflops during a fourth duration. ### Claim 9 (depends on 8) The display apparatus of claim 8, wherein the display panel comprises four display blocks, and the decoder generates a control signal of four bits to control switches connected between the second, fourth, sixth and eighth flipflops and the first to fourth registers based on control bits of two bits. ### Claim 10 (depends on 5) The display apparatus of claim 5, further comprising: a vertical start signal controller which generates the converted vertical start signal based on the sampling signal. ### Claim 11 (depends on 10) The display apparatus of claim 10, wherein the vertical start signal generates the converted vertical start signal when the sampling signal corresponding to the display blocks represents a periodicity. ### Claim 12 (depends on 11) The display apparatus of claim 11, wherein the sampling signal has a first level and a second level, when accumulated numbers of the second levels of the sampling signals corresponding to the display blocks are different from each other during a predetermined accumulation duration, the vertical start signal controller generates the converted vertical start signals. ### Claim 13 A method of driving a display apparatus, the method comprising: outputting a gate signal to a plurality of display blocks of a display panel of the display apparatus; outputting a data voltage to the display panel; and providing light to the display panel, wherein sequences of outputting the gate signals to the display blocks are different from each other in adjacent frames. ### Claim 14 (depends on 13) The method of claim 13, wherein the display block is in a first state when the light is provided to the display block and the gate signal is outputted to the display block, the display block is in a second state when the light is not provided to the display block and the gate signal is outputted to the display block, and when the first state and the second state of the display blocks represent a periodicity, the sequences of outputting the gate signals to the display blocks are different from each other in the adjacent frames. ### Claim 15 (depends on 14) The method of claim 14, wherein when accumulated numbers of the second state of the display blocks are different from each other during a predetermined accumulation duration, the sequences of outputting the gate signals to the display blocks are different from each other in the adjacent frames. ### Claim 16 (depends on 13) The method of claim 13, wherein a gate driver of the display device, which outputs the gate signal to the display panel, receives a plurality of converted vertical start signals corresponding to the display blocks, sequences of activation of the converted vertical start signals are different from each other in the adjacent frames. ### Claim 17 (depends on 16) The method of claim 16, further comprising: generating a sampling signal by sampling a driving signal of a backlight assembly of the display device, which provides the light to the display panel, using a plurality of vertical start signals from a plurality of flipflops; and storing the sampling signal to a plurality of registers. ### Claim 18 (depends on 17) The method of claim 17, further comprising: controlling operations of a plurality of switches connected between the flipflops and the registers. ### Claim 19 (depends on 17) The method of claim 17, further comprising: generating the converted vertical start signals based on the sampling signal stored in the registers.