# US 11,112,647 B2 · Display device, driving method and electronic apparatus > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,112,647 B2 - Document ID: US11112647B2 - Status: Granted - Kind: B2 - Application number: 16/372,515 - Filed: 2019-04-02 - Published: 2019-07-25 - Granted: 2021-09-07 - Earliest claimed: 2018-11-02 - Assignees: Xiamen Tianma Micro-Electronics Co., Ltd. - Applicants: Xiamen Tianma Micro-Electronics Co., Ltd. - Inventors: Ling Wu; Boping Shen - Web page: https://patentgrep.com/patent/US11112647B2 ## CPC - G02F 1/133603: {with LEDs} - G02F 1/133621: {providing coloured light (G02F1/133617, G02F1/133533 take precedence)} - G02F 1/136286: {Wiring, e.g. gate line, drain line} - G02F 1/1368: in which the switching element is a three-electrode device {(G02F1/136277 takes precedence)} - G09G 3/3413: {Details of control of colour illumination sources} - G09G 3/3426: {the different display panel areas being distributed in two dimensions, e.g. matrix} - G02F 1/133622: {Colour sequential illumination} - G02F 1/133624: {characterised by their spectral emissions} - G02F 2203/30: Gray scale - G09G 3/3648: {using an active matrix (G09G3/367 - G09G3/3696 take precedence)} - G09G 2310/0235: Field-sequential colour display - 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 The present disclosure provides a display device, a driving method, and an electronic apparatus. The display device includes a backlight module including a substrate and a plurality of LEDs disposed on the substrate, and the plurality of LEDs being configured to emit light having at least one color of red, green, and blue; and a display panel, configured to display red light when the plurality of LEDs emits red light, to display green light when the plurality of LEDs emits green light, and to display blue light when the plurality of LEDs emits blue light. The display device does not require a color resist layer, thereby greatly improving the light transmittance of the display device. ## Claims ### Claim 1 A display device, comprising: a backlight module comprising: a substrate; and a plurality of light-emitting diodes (LEDs) disposed on the substrate, wherein the plurality of LEDs comprises red LEDs configured to emit red light, green LEDs configured to emit green light, and blue LEDs configured to emit-blue light; and a display panel configured to display red light when the plurality of LEDs emits red light, display green light when the plurality of LEDs emits green light, and display blue light when the plurality of LEDs emits blue light, wherein the plurality of LEDs is arranged in an array comprising rows and columns, wherein in each of the rows of LEDs and in each of the columns of LEDs, the red LEDs, the green LEDs and the blue LEDs are arranged in a repeated linearly aligned sequence of LEDs, wherein a time period during which the display panel is controlled to display red light is shorter than or equal to a time period during which the backlight module is controlled to emit red light, a time period during which the display panel is controlled to display green light is shorter than or equal to a time period during which the backlight module is controlled to emit green light, and a time period during which the display panel is controlled to display blue light is shorter than or equal to a time period during which the backlight module is controlled to emit blue light, wherein the linearly aligned sequence comprises a red LED immediately followed by one of: A) a green LED immediately followed by a blue LED, and B) a blue LED immediately followed by a green LED. ### Claim 2 (depends on 1) The display device according to claim 1, wherein the red LED, the green LED, and the blue LED have a same light-emitting duration. ### Claim 3 (depends on 1) The display device according to claim 1, further comprising a first control circuit configured to control operation states of the red LED, the green LED, and the blue LED, wherein when one of the red LED, the green LED, and the blue LED is in a light-emitting state, remaining ones of the red LED, the green LED, and the blue LED are in a non-light-emitting state. ### Claim 4 (depends on 1) The display device according to claim 1, wherein a number of LEDs of the plurality of LEDs arranged in each of at least two light-emitting areas are identical. ### Claim 5 (depends on 1) The display device according to claim 1, further comprising a liquid crystal layer and an array substrate, wherein the array substrate comprises a display area having a plurality of scan lines and a plurality of data lines, the plurality of scan lines is arranged in parallel in a first direction, the plurality of data lines is arranged in parallel in a second direction, and the plurality of scan lines intersects with the plurality of data lines in an insulation manner to define a plurality of pixels; each of the plurality of pixels corresponds to a respective one thin film transistor; the display area has a length of x in the first direction and a length of y in the second direction; each of the plurality of pixels has a length of a in the first direction and a length of b in the second direction, and the first direction intersects with the second direction; and the display panel has a display resolution of m×n, where x m ⁢ : ⁢ ⁢ y n = a b . ### Claim 6 (depends on 5) The display device according to claim 5, further comprising a third control circuit configured to control an operation state of the thin film transistor, so as to control a gray level of red light, green light or blue light passing through the liquid crystal layer. ### Claim 7 A driving method, applied to a display device comprising: a backlight module comprising: a substrate; and a plurality of light-emitting diodes (LEDs) disposed on the substrate, wherein the plurality of LEDs comprises red LEDs configured to emit red light, green LEDs configured to emit green light, and blue LEDs configured to emit-blue light; and a display panel configured to display red light when the plurality of LEDs emits red light, display green light when the plurality of LEDs emits green light, and display blue light when the plurality of LEDs emits blue light, wherein the plurality of LEDs is arranged in an array comprising rows and columns, and wherein in each of the rows of LEDs and in each of the columns of LEDs, the red LEDs, the green LEDs and the blue LEDs are arranged in a repeated linearly aligned sequence of LEDs, wherein the linearly aligned sequence comprises a red LED immediately followed by one of: A) a green LED immediately followed by a blue LED, and B) a blue LED immediately followed by a green LED, wherein the driving method comprises: controlling the backlight module to emit red light during a first time period, controlling the backlight module to emit green light during a second time period, and controlling the backlight module to emit blue light during a third time period; and controlling the display panel to display red light during a fourth time period, controlling the display panel to display green light during a fifth time period, and controlling the display panel to display blue light during a sixth time period, wherein the fourth time period is shorter than or equal to the first time period, the fifth time period is shorter than or equal to the second time period, and the sixth time period is shorter than or equal to the third time period. ### Claim 8 (depends on 7) The driving method according to claim 7, wherein the first time period, the second time period, and the third time period have a same duration. ### Claim 9 (depends on 7) The driving method according to claim 7, wherein the fourth time period, the fifth time period, and the sixth time period have a same duration. ### Claim 10 An electronic apparatus, comprising a display device comprising: a backlight module comprising: a substrate; and a plurality of light-emitting diodes (LEDs) disposed on the substrate, wherein the plurality of LEDs comprises red LEDs configured to emit red light, green LEDs configured to emit green light, and blue LEDs configured to emit-blue light; and a display panel configured to display red light when the plurality of LEDs emits red light, display green light when the plurality of LEDs emits green light, and display blue light when the plurality of LEDs emits blue light, wherein the plurality of LEDs is arranged in an array comprising rows and columns, and wherein in each of the rows of LEDs and in each of the columns of LEDs, the red LEDs, the green LEDs and the blue LEDs are arranged in a repeated linearly aligned sequence of LEDs, wherein a time period during which the display panel is controlled to display red light is shorter than or equal to a time period during which the backlight module is controlled to emit red light, a time period during which the display panel is controlled to display green light is shorter than or equal to a time period during which the backlight module is controlled to emit green light, and a time period during which the display panel is controlled to display blue light is shorter than or equal to a time period during which the backlight module is controlled to emit blue light, wherein the linearly aligned sequence comprises a red LED immediately followed by one of: A) a green LED immediately followed by a blue LED, and B) a blue LED immediately followed by a green LED. ### Claim 11 (depends on 1) The display device according to claim 1, wherein the plurality of LEDs is arranged in at least two light-emitting areas. ### Claim 12 (depends on 11) The display device according to claim 11, wherein each of the at least two light-emitting areas at least comprises the red LED, the green LED and the blue LED.