TWI614740B - Display device and method for scanning sub-pixel array of display device - Google Patents

Abstract

The present invention discloses a display panel including an array formed by a plurality of sub-pixels, the plurality of sub-pixels including a first color, a second color, and a third color sub-pixels; the array is arranged as follows: On the first axis, the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel are in order from top to bottom; on the second axis along the second direction, it is third from top to bottom Color sub-pixel, second color sub-pixel, and first color sub-pixel; on the third axis along the third direction, the third color sub-pixel, the second color sub-pixel, and the first color sub are in order from top to bottom Pixels; the first axis, the second axis, and the third axis intersect at a second color sub-pixel, wherein the second axis and the third axis have an angle of 45 degrees with the first axis, and the second axis and The third axis is perpendicular.

Description

Display device and method for scanning sub-pixel array of display device

The present invention relates to display device technology. In particular, the present invention relates to an active matrix organic light emitting diode sub-pixel arrangement and a scanning technique thereof.

With the development of technology, the resolution of display devices has been continuously improved in recent years. For example, the resolution of Full HD (High Definition) (1920 * 1080) has been increased to 4K resolution (3840 * 2160 or 4096 * 2160 of UHD (Ultra HD)). ). The improvement of the display device resolution will improve the display quality of the display device. However, the increase in the resolution of the display device will cause the display device to use more pixel units, resulting in a significant increase in production costs. Therefore, in order to effectively control the number of pixel units, a current common practice is to present a plurality of pixel units through a plurality of sub-pixels. In the existing display panel technology, the pixel array design of active matrix organic light emitting diode (AMOLED) tends to use an arrangement similar to PenTile technology. Each pixel unit of a conventional pixel array is composed of three sub-pixels: red, green, and blue. Compared to a conventional pixel unit that includes three sub-pixels of red, green, and blue, a single pixel unit of a PenTile pixel array Contains only a small number of subpixels. Because only three primary colors can constitute all colors, and only two colors cannot constitute all colors, when an image is actually displayed, a pixel unit of PenTile will "borrow" another color of its adjacent pixel unit to constitute The primary color is additionally compensated with Gamut Mapping Algorithm (GMA) or Sub-pixel Rendering (SPR) technology. In one prior art, two pixel units are represented by using four sub-pixels such as red, green, blue, and white. In this prior art, one pixel unit includes red and green sub-pixels, and the other pixel unit includes blue and white sub-pixels. In another prior art, two pixel units are presented using five sub-pixels such as red, green, blue, white, and red. In the above method, at least one sub-pixel is shared between a plurality of pixel units to save the number of sub-pixel layouts, thereby effectively reducing the production cost of the display device. However, in the prior art, in each scanning period of each pixel unit, the same shape sampling window is used for pixel unit scanning, and the same shape sampling window is used for pixel unit scanning with the advantage of simple algorithm. The number of pixel units per unit area is constantly increasing, and the technology of scanning pixel units using sampling windows of the same shape has created a bottleneck. Therefore, it is urgent to seek a sub-pixel arrangement design and an improved sub-pixel scanning method that can provide high resolution.

Each device of the invention has several aspects, none of which is solely responsible for the desired attributes of the invention. Without limiting the scope of the invention, its more prominent features will now be discussed briefly. After considering this discussion, and especially after reading the section entitled [ Embodiment ] , generally a person skilled in the art will understand why the device and method of the present invention are superior to other technologies. An embodiment of the present disclosure provides a display device including a display panel including an array formed by a plurality of sub-pixels, the plurality of sub-pixels including a first color, a second color, and a third color sub-pixel; an arrangement of the array The method is as follows: on the first axis along the first direction, the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel are in order from top to bottom; on the second axis along the second direction, The third color sub-pixel, the second color sub-pixel, and the first color sub-pixel are in order from top to bottom; on the third axis along the third direction, the third color sub-pixel, the first A two-color sub-pixel and a first color sub-pixel; the first axis, the second axis, and the third axis intersect with the second color sub-pixel, wherein the second axis and the third axis have the first axis respectively The included angle is 45 degrees, and the second axis is perpendicular to the third axis. An embodiment of the present disclosure provides a method for scanning a sub-pixel array of a display device, which includes: scanning a first pixel and a second pixel in a first time period, the first pixel and the second pixel being respectively A first sampling window and a second sampling window are defined, wherein the first sampling window and the second sampling window are diamond-shaped and cover a first common sub-pixel. The method further includes: scanning a third pixel and a fourth pixel in a second time period, the third pixel and the fourth pixel being defined by a third sampling window and a fourth sampling window, respectively. The third sampling window and the fourth sampling window are parallelograms and cover a second shared sub-pixel and a third shared sub-pixel, and the third sampling window and the fourth sampling window have a first overlapping area. . Each of the first pixel, the second pixel, the third pixel, and the fourth pixel is composed of two first color sub-pixels, one second color sub-pixel, and one third color sub-pixel.

The following detailed description is directed to specific embodiments of the invention. However, the invention can be implemented in a number of different ways. In the following description, reference is made to the drawings, in which corresponding parts are designated by numbers. FIG. 1 is a schematic diagram of a display device according to the present invention. In one embodiment, the display device 10 may be an organic light emitting diode (OLED) display device. 1, the display device 10 includes a display unit 100, a scan driver 120, and a data driver 130. The display device 10 may also include other devices and / or components. The display unit 100 may include a plurality of pixel units 110 connected to the scan lines S1-Sn and the data lines D1-Dm. In addition, each pixel unit 110 may include a plurality of sub-pixels emitting light of different colors. The display unit 100 may display images corresponding to the scan signals provided by the scan lines S1-Sn generated by the scan driver 120 and the data signals provided by the data lines D1-Dm generated by the data driver 130. The scan driver 120 may generate a scan signal. The scan signals generated in the scan driver 120 may be sequentially supplied to the scan lines S1-Sn. The scan signals may be supplied to the scan lines S1-Sn, respectively, out of order. The data driver 130 can receive input signals, such as RGB data, and can generate data signals corresponding to the received input signals. The data signals generated by the data driver 130 can be provided to the pixel unit 110 via the data lines D1-Dm so as to be synchronized with the scanning signals. The data signals may also be supplied to the data lines D1-Dm in a manner that is not synchronized with the scanning signals. FIG. 2A is a schematic diagram of a sub-pixel arrangement design according to the present invention. FIG. 2A shows an array 200. In one embodiment, the display unit 100 is formed by repeatedly arranging the array 200 as a unit. In the prior art sub-pixel design, generally rectangular or diamond-shaped units are used, and the array 200 of the present invention has a shield diamond shape. This shape feature can be more clearly understood by referring to the following description and drawings. As shown in FIG. 2A, the array 200 is formed of a plurality of sub-pixels. The plurality of sub-pixels include a first-color sub-pixel 240, a second-color sub-pixel 250, and a third-color sub-pixel 260. The arrangement of the array 200 is: on the first axis 210 along the first direction, the first color sub-pixel 240, the second color sub-pixel 250, and the third color sub-pixel 260 are sequentially arranged from top to bottom; On the second axis 220 in the two directions, the third color sub-pixel 260, the second color sub-pixel 250, and the first color sub-pixel 240 are arranged in order from top to bottom; on the third axis 230 along the third direction, The third color sub-pixel 260, the second color sub-pixel 250, and the first color sub-pixel 240 are sequentially arranged from top to bottom. The first axis 210, the second axis 220, and the third axis 230 cross the second color sub-pixel 250. As shown in FIG. 2A, the second shaft 220 and the third shaft 230 have an angle of 45 degrees with the first shaft 210, respectively, and the second shaft 220 and the third shaft 230 are perpendicular to each other. In a prior art, the pixel formation array has nine sub-pixels, and the pixel formation array disclosed in the present invention consists of only seven sub-pixels. In a high-resolution display device, an array of pixels composed of fewer sub-pixels has advantages in manufacturing and cost, and an array of pixels composed of fewer sub-pixels is more beneficial to the improvement of the resolution of the display device. FIG. 2B is a schematic diagram of a sub-pixel color design according to the present invention. The sub-pixel color design disclosed in the present invention includes at least three different color configurations 270, 280, and 290. In the color configuration 270, the first color sub-pixel 240 is red, the second color sub-pixel 250 is blue, and the third color sub-pixel 260 is green. In the color configuration 280, the first color sub-pixel 240 is red, the second color sub-pixel 250 is green, and the third color sub-pixel 260 is blue. In the color configuration 290, the first color sub-pixel 240 is blue, the second color sub-pixel 250 is red, and the third color sub-pixel 260 is green. 3A to 3D are schematic diagrams of a sub-pixel arrangement design according to the present invention. The display unit 100 shown in FIG. 1 may be formed by repeatedly arranging the array 200 disclosed in the present invention. In the embodiment shown in FIGS. 3A and 3B, the display unit 100 is constituted by an array 200 having a color configuration 270 repeatedly arranged. Two adjacent arrays include two repeating sub-pixels 310. In the embodiment shown in FIGS. 3A and 3B, the two repeated sub-pixels 310 include a green sub-pixel and a red sub-pixel. In the embodiment shown in FIG. 3C, the array 200 with the color configuration 280 is repeatedly arranged to form the display unit 100. In this case, the two repeated sub-pixels 310 will include a red sub-pixel and a blue sub-pixel. . In the embodiment shown in FIG. 3D, the array 200 with the color configuration 290 is repeatedly arranged to form the display unit 100. In this case, the two repeated sub-pixels 310 will include a green sub-pixel and a blue sub-pixel. . 4A to 4E are schematic steps of a sub-pixel scanning method according to the present invention. In FIGS. 4A to 4E, the display unit 100 is formed by repeatedly arranging an array 200 having a color configuration 270. Refer to FIG. 1 for a clearer understanding of the scanning steps of FIGS. 4A to 4E. In an embodiment, the scanning steps of FIGS. 4A to 4E may be sequentially provided by the scanning driver 120 to the scanning lines S1-S5 corresponding to the scanning signals, and the five scanning steps of FIGS. 4A to 4E are continuously scanned for a complete cycle To Sn. In another embodiment, any one of the scanning steps of FIGS. 4A to 4E can be selected, and the selected scanning step can be repeatedly performed on the scanning lines S1-Sn. In another embodiment, at least two of the scanning steps of FIGS. 4A to 4E may be selected, and the selected at least two scanning steps may be repeatedly performed on the scanning lines S1-Sn. FIG. 4A shows how the pixels are scanned during the first time period. As shown in FIG. 4A, during a first time period, the scan driver 120 and the data driver 130 are configured to scan the first pixel and the second pixel defined by the first sampling window 400 and the second sampling window 410. During the first time period, both the first sampling window 400 and the second sampling window 410 have a diamond shape. As shown in FIG. 4A, in the first time period, the first pixel and the second pixel have a first common sub-pixel, that is, a green sub-pixel. The first pixel and the second pixel each include four sub-pixels. In one embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having the color configuration 270 or the color configuration 290. In this embodiment, the first pixel and the second pixel each include a red sub-pixel, a blue sub-pixel, and two green sub-pixels. Because human eyes are most sensitive to green light waves, and human eyes rely on light in the green wavelength range to perceive the details and brightness of objects, a configuration that includes two green sub-pixels in a pixel unit has advantages. In another embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having a color configuration 280. In this embodiment, the first pixel and the second pixel each include a red sub-pixel, a green sub-pixel, and two blue sub-pixels. FIG. 4B shows how the pixels are scanned during the second time period. As shown in FIG. 4B, during the second time period, the scan driver 120 and the data driver 130 are configured to scan the third pixel and the fourth pixel defined by the third sampling window 420 and the fourth sampling window 430. During the second time period, the third sampling window 420 and the fourth sampling window 430 both have a parallelogram shape and have an overlapping portion 425 therebetween. As shown in FIG. 4B, during the second time period, the third pixel and the fourth pixel share a green sub-pixel and a red sub-pixel. The third pixel and the fourth pixel each include four sub-pixels. In one embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having the color configuration 270 or the color configuration 290. In this embodiment, the third pixel and the fourth pixel each include a red sub-pixel, a blue sub-pixel, and two green sub-pixels. In another embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having a color configuration 280. In this embodiment, the third pixel and the fourth pixel each include a red sub-pixel, a green sub-pixel, and two blue sub-pixels. FIG. 4C shows how the pixels are scanned during the third time period. As shown in FIG. 4C, during the third time period, the scan driver 120 and the data driver 130 are configured to scan the fifth pixel and the sixth pixel defined by the fifth sampling window 440 and the sixth sampling window 450. During the third time period, the fifth sampling window 440 and the sixth sampling window 450 both have a diamond shape, and one vertex of the fifth sampling window 440 and one vertex of the sixth sampling window 450 overlap each other. As shown in FIG. 4C, during the third time period, the fifth pixel and the sixth pixel share a green sub-pixel. The fifth pixel and the sixth pixel each include four sub-pixels. In one embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having the color configuration 270 or the color configuration 290. In this embodiment, the fifth pixel and the sixth pixel each include a red sub-pixel, a blue sub-pixel, and two green sub-pixels. In another embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having a color configuration 280. In this embodiment, the fifth pixel and the sixth pixel each include a red sub-pixel, a green sub-pixel, and two blue sub-pixels. FIG. 4D shows the state of pixel scanning during the fourth time period. As shown in FIG. 4D, during the fourth time period, the scan driver 120 and the data driver 130 are configured to scan the seventh pixel and the eighth pixel defined by the seventh sampling window 460 and the eighth sampling window 470. In the fourth time period, the seventh sampling window 460 and the eighth sampling window 470 both have a parallelogram shape and have an overlapping portion 465 between each other. In an embodiment, compared with the second time period shown in FIG. 4B, the area of the overlapping portion 465 in the fourth time period is larger than the area of the overlapping portion 425 in the second time period. As shown in FIG. 4D, during the fourth time period, the seventh pixel and the eighth pixel share a green sub-pixel and a red sub-pixel. The seventh pixel and the eighth pixel each include four sub-pixels. In one embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having the color configuration 270 or the color configuration 290. In this embodiment, the seventh pixel and the eighth pixel each include a red sub-pixel, a blue sub-pixel, and two green sub-pixels. In another embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having a color configuration 280. In this embodiment, the seventh pixel and the eighth pixel each include a red sub-pixel, a green sub-pixel, and two blue sub-pixels. FIG. 4E shows the state of pixel scanning during the fifth time period. As shown in FIG. 4E, during the fifth time period, the scan driver 120 and the data driver 130 are configured to scan the ninth pixel and the tenth pixel defined by the ninth sampling window 480 and the tenth sampling window 490. In the fifth time period, both the ninth sampling window 480 and the tenth sampling window 490 have a diamond shape, and one vertex of the ninth sampling window 480 and one vertex of the tenth sampling window 490 overlap. As shown in FIG. 4E, during the fifth time period, the ninth pixel and the tenth pixel share a green sub-pixel. The ninth pixel and the tenth pixel each include four sub-pixels. In one embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having the color configuration 270 or the color configuration 290. In this embodiment, the ninth pixel and the tenth pixel each include a red sub-pixel, a blue sub-pixel, and two green sub-pixels. In another embodiment, the display unit 100 may be formed by repeatedly arranging the array 200 having a color configuration 280. In this embodiment, the ninth pixel and the tenth pixel each include a red sub-pixel, a green sub-pixel, and two blue sub-pixels. The present invention adopts a design with a changed pixel shape in different pixel scanning cycles. By changing the pixel shape, the effect of continuous pixel reduction and improved resolution can be achieved when designing a display device. Although specific embodiments of the invention have been disclosed herein, this does not mean that the invention is limited to the disclosed embodiments. Those skilled in the art will recognize that modifications and variations can be made to these embodiments without departing from the spirit of the invention. The invention is intended to include all such modifications and variations that fall within the scope of the appended claims.

10‧‧‧ display device

100‧‧‧display unit

110‧‧‧pixel unit

120‧‧‧Scan driver

130‧‧‧Data Drive

200‧‧‧ array

210‧‧‧ first axis

220‧‧‧Second axis

230‧‧‧ third axis

240‧‧‧ first color sub-pixel

250‧‧‧ second color sub-pixel

260‧‧‧ third color sub-pixel

270‧‧‧Color Configuration

280‧‧‧Color Configuration

290‧‧‧Color Configuration

310‧‧‧ repeated subpixels

400‧‧‧first sampling window

410‧‧‧Second Sampling Window

420‧‧‧Third sampling window

425‧‧‧ overlap

430‧‧‧Fourth sampling window

440‧‧‧Fifth sampling window

450‧‧‧ sixth sampling window

460‧‧‧Seventh sampling window

465‧‧‧ Overlap

470‧‧‧eighth sampling window

480‧‧‧the ninth sampling window

490‧‧‧Tenth sampling window

S1, S2, S3, S4, S5, Sn‧‧‧scan lines

D1, D2, Dm‧‧‧ data cable

FIG. 1 is a schematic diagram of a display device according to the present invention. FIG. 2A is a schematic diagram of a sub-pixel arrangement design according to the present invention. FIG. 2B is a schematic diagram of a sub-pixel color design according to the present invention. 3A to 3D are schematic diagrams of a sub-pixel arrangement design according to the present invention. 4A to 4E are schematic steps of a sub-pixel scanning method according to the present invention.

200‧‧‧ array

210‧‧‧ first axis

220‧‧‧Second axis

230‧‧‧ third axis

240‧‧‧ first color sub-pixel

250‧‧‧ second color sub-pixel

260‧‧‧ third color sub-pixel

Claims (15)

A display device includes: a display panel including an array formed by a plurality of sub-pixels, the plurality of sub-pixels including a first color, a second color, and a third color sub-pixel; the array is arranged as follows: On the first axis in the first direction, the first color sub-pixel, the second color sub-pixel, and the third color sub-pixel are in order from top to bottom; on the second axis along the second direction, from top to bottom The order is the third color sub-pixel, the second color sub-pixel, and the first color sub-pixel; on the third axis along the third direction, the third color sub-pixel, the second color sub-pixel, and A first color sub-pixel; the first axis, the second axis, and the third axis intersect with the second color sub-pixel, wherein the second axis and the third axis have an angle of 45 degrees with the first axis, and The second axis is perpendicular to the third axis. For example, the display device of claim 1, wherein the first color, the second color, and the third color are red, blue, and green, respectively. For example, the display device of claim 1, wherein the first color, the second color, and the third color are red, green, and blue, respectively. For example, the display device of claim 1, wherein the first color, the second color, and the third color are blue, red, and green, respectively. A method for scanning a sub-pixel array of a display device includes: scanning a first pixel and a second pixel in a first time period, the first pixel and the second pixel being respectively provided by a first sampling window and A second sampling window is defined, wherein the first sampling window and the second sampling window are diamond-shaped and cover a first common sub-pixel; scanning a third pixel and a fourth pixel in a second time period, the The third pixel and the fourth pixel are respectively defined by a third sampling window and a fourth sampling window, wherein the third sampling window and the fourth sampling window are parallelograms and cover a second common sub-pixel and a first Three common sub-pixels, and wherein the third sampling window and the fourth sampling window have a first overlapping area, wherein each of the first pixel, the second pixel, the third pixel, and the fourth pixel is formed by It consists of two first color sub-pixels, one second color sub-pixel and one third color sub-pixel. The method of claim 5, wherein the first color sub-pixel is green, the second color sub-pixel is red, and the third color sub-pixel is blue. The method of claim 5, wherein the first common sub-pixel is green, the second common sub-pixel is green, and the third common sub-pixel is red. The method of claim 5, further comprising: scanning a fifth pixel and a sixth pixel in a third time period, wherein the fifth pixel and the sixth pixel are respectively sampled by a fifth sampling window and a sixth sampling window. The fifth sampling window and the sixth sampling window are diamond-shaped and cover a fourth common sub-pixel, wherein a vertex of the fifth sampling window and a vertex of the sixth sampling window overlap each other. The method of claim 8, further comprising: scanning a seventh pixel and an eighth pixel in a fourth time period, the seventh pixel and the eighth pixel being respectively sampled by a seventh sampling window and an eighth sample Window, wherein the seventh sampling window and the eighth sampling window are parallelograms and cover a fifth common sub-pixel and a sixth common sub-pixel, wherein the seventh sampling window and the eighth sampling window have a second The overlapping area, and wherein the second overlapping area is larger than the first overlapping area. The method of claim 9, wherein the fourth common sub-pixel is green, the fifth common sub-pixel is green, and the sixth common sub-pixel is red. The method of claim 9, further comprising: scanning a ninth pixel and a tenth pixel in a fifth time period, the ninth pixel and the tenth pixel are respectively sampled by a ninth sampling window and a tenth sample window. The ninth sampling window and the tenth sampling window are diamond-shaped and cover a seventh common sub-pixel, wherein a vertex of the ninth sampling window and a vertex of the tenth sampling window overlap each other. The method of claim 11, wherein the seventh common sub-pixel is green. The method of claim 11, wherein each of the fifth sampling window, the sixth sampling window, the seventh sampling window, the eighth sampling window, the ninth sampling window, and the tenth sampling window consists of two A first color sub-pixel, a second color sub-pixel, and a third color sub-pixel. The method of claim 13, wherein the first color sub-pixel is green, the second color sub-pixel is red, and the third color sub-pixel is blue. The method of claim 11, wherein a complete scanning cycle on the display panel includes repeatedly performing the first time period, the second time period, the third time period, the fourth time period, and the fifth time period. Such scans.