Pixel array and display unit

Abstract

The utility model discloses a pixel array and a display unit, the pixel array comprises a plurality of pixel units arranged in an array, and each pixel unit comprises light-emitting chips with at most two light-emitting colors; pixel rows, located on the peripheral edge, of the pixel array comprise light-emitting chips of at least three light-emitting colors, and pixel columns, located on the peripheral edge, of the pixel array comprise light-emitting chips of at least three light-emitting colors. The pixel rows and the pixel columns at the peripheral edge of the pixel array comprise the pixel units with at least three colors, so that the condition of color missing at the edge of the pixel array is avoided.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of display, and particularly relates to a pixel array and a display unit. BACKGROUND

[0002] Currently, a light-emitting diode (LED) pixel array using a sub-pixel rendering (SPR) technology usually has less than two LED devices in a single pixel, and the required color is obtained by cooperation between multiple pixels.

[0003] However, the traditional SPR pixel array usually has a color missing problem when viewed from a certain angle to the edge of the SPR pixel array. CONTENT OF THE INVENTION

[0004] The present application aims to provide a pixel array and a display unit, and aims to solve the edge color missing problem of the traditional virtual pixel.

[0005] A first aspect of the present application provides a pixel array, comprising: a plurality of pixel units arranged in an array, each of the pixel units comprising light emitting chips of at most two light emitting colors; a pixel row at a four-side edge of the pixel array comprising the light emitting chips of at least three light emitting colors, and a pixel column at the four-side edge of the pixel array comprising the light emitting chips of at least three light emitting colors.

[0006] In an embodiment, the light emitting color arrangement order of any two adjacent rows of the pixel units is different, and the light emitting color arrangement order of any two adjacent columns of the pixel units is different.

[0007] In an embodiment, each of the pixel units comprises a light emitting chip of one light emitting color, and the light emitting chip comprises any one of a red light emitting chip, a green light emitting chip and a blue light emitting chip.

[0008] In an embodiment, the pixel array further comprises at least three first signal lines and at least one second signal line; the first signal lines are connected with first ends of the light emitting chips, and the second signal lines are connected with second ends of the light emitting chips.

[0009] In an embodiment, each of the pixel units in the pixel array is arranged in a three-row and three-column matrix, each row of the pixel units comprises the light emitting chips of three colors, and each column of the pixel units comprises the light emitting chips of three colors.

[0010] In one embodiment, the pixel array includes nine first signal lines and one second signal line, every three first signal lines are connected with the first end of the light emitting chip in one column of the pixel units, and the second signal line is connected with the second end of the light emitting chip in three rows of the pixel units.

[0011] In one embodiment, the pixel array further includes blank units, and each row and each column of the pixel array includes at least one blank unit.

[0012] In one embodiment, the blank units are not adjacent to each other.

[0013] In one embodiment, the pixel units and the blank units in the pixel array are arranged in a matrix of four rows and four columns.

[0014] In one embodiment, the pixel array includes six first signal lines and two second signal lines, every three first signal lines are connected with the first end of the light emitting chip in two columns of the pixel units, and every second signal line is connected with the second end of the light emitting chip in two rows of the pixel units.

[0015] In one embodiment, the pixel array includes twelve first signal lines and one second signal line, every three first signal lines are connected with the first end of the light emitting chip in one column of the pixel units, and the second signal line is connected with the second end of the light emitting chip in four rows of the pixel units.

[0016] The second aspect of the embodiment of the present application provides a display unit, which includes the pixel array as described above.

[0017] Compared with the prior art, the embodiment of the present application has the beneficial effect that, because the pixel rows and the pixel columns at the four edges of the pixel array each include at least three kinds of pixel units, the lack of color does not occur at the edges of the pixel array. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 A schematic diagram of the pixel array provided by one embodiment of the present application;

[0019] Figure 2 A schematic diagram of the pixel array provided by one embodiment of the present application;

[0020] Figure 3 A schematic diagram of the pixel array provided by one embodiment of the present application;

[0021] Figure 4 A circuit schematic diagram of the pixel array provided by one embodiment of the present application;

[0022] Figure 5 Another schematic diagram of a pixel array in four rows and four columns is provided for an embodiment of the present application.

[0023] Figure 6 Another schematic diagram of a pixel array in four rows and four columns is provided for an embodiment of the present application.

[0024] Figure 7 A schematic diagram of a display unit is provided for an embodiment of the present application. DETAILED DESCRIPTION

[0025] In order to make the technical problems solved by the present application, the technical solutions and the beneficial effects clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not used to limit the present application.

[0026] It should be noted that when an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0027] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0028] In addition, the terms "first", "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0029] Figure 1 A schematic diagram of a pixel array is shown, and only parts related to the present embodiment are shown for the convenience of description, and are described in detail as follows:

[0030] The pixel array 10 includes a plurality of pixel units 100 arranged in an array, each pixel unit 100 including at least two light-emitting chips 300 of different light-emitting colors.

[0031] The pixel rows at the four peripheral edges of the pixel array 10 include light emitting chips 300 of at least three light emitting colors, and the pixel columns at the four peripheral edges of the pixel array 10 include light emitting chips 300 of at least three light emitting colors.

[0032] It can be understood that, since the pixel rows and the pixel columns at the four peripheral edges of the pixel array 10 each include light emitting chips 300 of at least three colors, there is no color deficiency at the edges of the pixel array 10.

[0033] In some embodiments, each row and each column of the pixel array 10 has at least three light emitting colors. In an embodiment, the arrangement order of the light emitting colors of any two adjacent rows of pixel units 100 is different, and the arrangement order of the light emitting colors of any two adjacent columns of pixel units 100 is different.

[0034] It should be noted that, in order to maximize the display effect, it is necessary to avoid the colors of adjacent pixel units 100 being the same, so as to avoid the local lack of light emitting chips 300 of a certain color or the local excess of light emitting chips 300 of a certain color in the pixel array 10, which makes it difficult to compensate for the hardware defects even if a certain color compensation method is used, and finally causes the local color cast of the pixel array 10. For example, when the arrangement order of the light emitting colors of the two adjacent rows of pixel units 100 is the same, a plurality of light emitting chips 300 of the same color are arranged in sequence, and even if a color compensation method is used, a fine line pattern composed of light emitting chips 300 of the same color can be clearly seen when the pixel array 10 is working.

[0035] In an embodiment, each pixel unit 100 includes a light emitting chip of one light emitting color, and the light emitting chip 300 includes any one of a red light emitting chip, a green light emitting chip, and a blue light emitting chip.

[0036] It can be understood that, when the pixel unit 100 is used to emit monochromatic light, one pixel unit 100 can include only one light emitting chip 300, and one pixel unit 100 can also include a plurality of light emitting chips 300 emitting the same color light. When the pixel unit 100 is used to emit light of multiple colors, one pixel unit 100 can include a plurality of light emitting chips 300 emitting different colors of light.

[0037] By using three light emitting chips 300 that can respectively emit red light, green light, and blue light, and adjusting the brightness of each light emitting chip 300, the light emitted by the three light emitting chips 300 can be mixed to obtain visible light of all colors.

[0038] Specifically, in some embodiments, each row of pixel units 100 in the pixel array 10 can emit red light, green light and blue light, and each column of pixel units 100 can also emit red light, green light and blue light.

[0039] In one embodiment, such as Figure 2 As shown, the pixel array 10 also includes at least three first signal lines and at least one second signal line. Figure 2 The diagram shows the first signal line R#1, the first signal line G#1, the first signal line B#1, the first signal line R#2, the first signal line G#2, the first signal line B#2, the first signal line R#3, the first signal line G#3, the first signal line B#3, and the second signal line ROW#1.

[0040] The first signal line is connected to the first end of the light-emitting chip 300, and the second signal line is connected to the second end of the light-emitting chip 300. The first end of the light-emitting chip 300 can be either its positive or negative terminal, and the second end can be either its positive or negative terminal.

[0041] The first signal line can be used to transmit column signals, and the second signal line can be used to transmit row signals, or the first signal line can be used to transmit row signals and the second signal line can be used to transmit column signals. Driven electrical signals can be provided to each pixel unit 100 via the first and second signal lines to adjust the brightness of each pixel unit 100.

[0042] The number of the first signal line and the second signal line can be set according to actual needs.

[0043] In one embodiment, such as Figure 2 As shown, the pixel units 100 in the pixel array 10 are arranged in a matrix of three rows and three columns (first matrix). Each pixel unit 100 includes a light-emitting chip 300 of one color. Each row of pixel units 100 includes light-emitting chips 300 of three colors, and each column of pixel units 100 includes light-emitting chips 300 of three colors. That is, there are a total of nine pixel units 100 in the pixel array 10 (exemplarily, specifically red pixel unit 110a, blue pixel unit 110b, green pixel unit 110c, green pixel unit 110d, red pixel unit 110e, blue pixel unit 110f, blue pixel unit 110g, green pixel unit 110h, and red pixel unit 110i).

[0044] It is understood that, since each row and column includes three pixel units 100, and each pixel unit 100 may include only one light-emitting chip 300, the pixel array 10 of this embodiment can save 67% of the light-emitting chips 300 compared to a conventional pixel matrix where a single pixel has three light-emitting chips. Compared to conventional virtual pixels, the pixel array 10 of this embodiment also requires fewer total light-emitting chips 300.

[0045] For example, such as Figure 2 As shown, in the first matrix, the three pixel units 100 in the first row are arranged in the order of first red pixel unit 110a, first blue pixel unit 110b, and first green pixel unit 110c; the three pixel units 100 in the second row are arranged in the order of second green pixel unit 110d, second red pixel unit 110e, and second blue pixel unit 110f; and the three pixel units 100 in the third row are arranged in the order of third blue pixel unit 110g, third green pixel unit 110h, and third red pixel unit 110i.

[0046] Accordingly, the three pixel units 100 in the first column are arranged in the order of first red pixel unit 110a, second green pixel unit 110d, and third blue pixel unit 110g; the three pixel units 100 in the second column are arranged in the order of first blue pixel unit 110b, second red pixel unit 110e, and third green pixel unit 110h; and the three pixel units 100 in the third column are arranged in the order of first green pixel unit 110c, second blue pixel unit 110f, and third red pixel unit 110i.

[0047] In one embodiment, such as Figure 2 As shown, the pixel array 10 includes nine first signal lines and one second signal line. Every three first signal lines are connected to the first end of the light-emitting chip 300 in a column of pixel units 100, and the second signal line is connected to the second end of the light-emitting chip 300 in three rows of pixel units 100. (The figure shows the first signal line R#1, first signal line G#1, first signal line B#1, first signal line R#2, first signal line G#2, first signal line B#2, first signal line R#3, first signal line G#3, first signal line B#3, and second signal line ROW#1.)

[0048] In one embodiment, such as Figure 3 As shown, the pixel array 10 also includes blank units. Each row and each column of the pixel array 10 includes at least one blank unit, which is a pixel unit that does not have a light-emitting chip and does not emit light. Figure 3The pixel units 100 in the image are specifically: blank pixel unit 120a, red pixel unit 120b, green pixel unit 120c, blue pixel unit 120d, green pixel unit 120e, blue pixel unit 120f, blank pixel unit 120g, red pixel unit 120h, red pixel unit 120i, blank pixel unit 120j, blue pixel unit 120k, green pixel unit 120l, blue pixel unit 120m, green pixel unit 120n, red pixel unit 120o, and blank pixel unit 120p.

[0049] If the density of light-emitting chips 300 in pixel array 10 is high enough, blank units can be set in pixel unit 100, and the specific setting can be determined according to actual needs.

[0050] In one embodiment, such as Figure 3 As shown, the blank cells are not adjacent to each other.

[0051] Understandably, since blank pixel units do not emit light, the blank pixel units are not adjacent to each other, which can prevent multiple blank pixel units from being connected together, thereby limiting the area of ​​a single blank area and improving the display effect of pixel array 10.

[0052] In one embodiment, such as Figure 3 As shown, the pixel units 100 and blank units in the pixel array 10 are arranged in a matrix of four rows and four columns (the second matrix). That is, there are a total of sixteen pixel units 100 in the pixel array 10.

[0053] In one embodiment, such as Figure 3 As shown, each row and each column includes at least three color pixel units 100 and one blank pixel unit. (Specifically, they are blank pixel unit 120a, red pixel unit 120b, green pixel unit 120c, blue pixel unit 120d, green pixel unit 120e, blue pixel unit 120f, blank pixel unit 120g, red pixel unit 120h, red pixel unit 120i, blank pixel unit 120j, blue pixel unit 120k, green pixel unit 120l, blue pixel unit 120m, green pixel unit 120n, red pixel unit 120o, and blank pixel unit 120p).

[0054] It is understood that, since each pixel unit 100 can include only one light-emitting chip 300, the pixel array 10 of this embodiment can save 75% of the light-emitting chips 300 compared to a conventional pixel matrix with three light-emitting chips per pixel. The pixel array 10 of this embodiment also requires fewer light-emitting chips 300 compared to conventional virtual pixels.

[0055] For example, such as Figure 3 As shown, the four pixel units 100 in the first row are arranged in the order of blank pixel unit 120a, red pixel unit 120b, green pixel unit 120c, and blue pixel unit 120d; the four pixel units 100 in the second row are arranged in the order of green pixel unit 120e, blue pixel unit 120f, blank pixel unit 120g, and red pixel unit 120h; the four pixel units 100 in the third row are arranged in the order of red pixel unit 120i, blank pixel unit 120j, blue pixel unit 120k, and green pixel unit 120l; and the four pixel units 100 in the fourth row are arranged in the order of blue pixel unit 120m, green pixel unit 120n, red pixel unit 120o, and blank pixel unit 120p.

[0056] Correspondingly, the four pixel units 100 in the first column are arranged in the order of blank pixel unit 120a, green pixel unit 120e, red pixel unit 120i, and blue pixel unit 120m; the four pixel units 100 in the second column are arranged in the order of red pixel unit 120b, blue pixel unit 120f, blank pixel unit 120j, and green pixel unit 120n; the four pixel units 100 in the third column are arranged in the order of green pixel unit 120c, blank pixel unit 120g, blue pixel unit 120k, and red pixel unit 120o; and the four pixel units 100 in the fourth column are arranged in the order of blue pixel unit 120d, red pixel unit 120h, green pixel unit 120l, and blank pixel unit 120p.

[0057] By arranging the pixel units 100 in a reasonable manner, the pixel units 100 of the three colors can be distributed as evenly as possible, thereby improving the display effect of the pixel array 10.

[0058] In one embodiment, such as Figure 5 As shown, the pixel array 10 includes six first signal lines and two second signal lines. Every three first signal lines are connected to the first end of the light-emitting chip 300 in the two columns of pixel units 100, and every two second signal lines are connected to the second end of the light-emitting chip 300 in the two rows of pixel units 100.

[0059] like Figure 5 As shown, every three first signal lines form a group, and each group of first signal lines corresponds to two columns of pixel units 100. One first signal line connects to pixel units 100 of the same color in each of the two columns of pixel units 100. The pixel array 10 can be connected to each pixel unit 100 via only one second signal line to reduce the number of signal lines, or multiple second signal lines can be used to connect to each pixel unit 100 separately to reduce the current flowing through a single second signal line. The first and second signal lines can achieve the following...Figure 6 Common cathode drive or common anode drive.

[0060] In one embodiment, the pixel array 10 includes twelve first signal lines and one second signal line. Every three first signal lines are connected to the first end of the light-emitting chip 300 in a column of pixel units 100, and the second signal line is connected to the second end of the light-emitting chip 300 in four rows of pixel units 100.

[0061] By connecting twelve first signal lines to the light-emitting chip 300 in each pixel unit 100, each pixel unit 100 can be accurately controlled. For example... Figure 3 As shown, three first signal lines can be grouped together (for example, first signal lines R#1, G#1, and B#1 can be grouped together). Each group of first signal lines corresponds to a column of pixel units 100 and is connected one-to-one with each pixel unit 100. The first signal lines and second signal lines can achieve the following: Figure 4 Common cathode drive or common anode drive.

[0062] Figure 7 A schematic diagram of a display unit 20 according to an embodiment of this application is shown. For ease of explanation, only the parts related to this embodiment are shown, and the details are as follows:

[0063] The display unit 20 includes a carrier board 30, a compensation control module 200, and a plurality of pixel arrays 10 as described above. The first signal line and the second signal line of the pixel array 10 can be disposed on the carrier board 30, and each pixel unit 100 can be bonded to the carrier board 30.

[0064] The pixel unit 100 and the compensation control module 200 can be respectively set on both sides of the carrier plate 30, and the compensation control modules 200 corresponding to multiple pixel arrays 10 can be integrated on a single controller.

[0065] The compensation control module 200 is electrically connected to each pixel unit 100. Taking any one of the pixel units 100 as the target pixel unit, and other pixel units within a certain distance range of the target pixel unit as compensation pixel units, the compensation control module 200 adjusts the brightness of the target pixel unit according to the distance between each compensation pixel unit and the target pixel unit based on the received control signal (the control signal can come from the host computer or other controller) to perform color compensation on the compensation pixel unit.

[0066] It can be understood that the control signals can be used to control any one of the pixel units 100 in the pixel array 10 as a target pixel unit, and the compensation control module 200 can control the brightness of a plurality of pixel units 100 according to the plurality of control signals, so as to mix the light emitted by the plurality of pixel units 100 to obtain light of a corresponding color, and finally display the required picture. The compensation control module 200 can also apply other color compensation methods, which will not be described in detail in this embodiment.

[0067] The display unit 20 can control each pixel array 10 according to the received control signals to obtain a corresponding picture.

[0068] In some embodiments, the pixel array 10 can be arranged at the edge of the display unit 20, and the remaining part can use traditional pixels or virtual pixels to overcome the edge color difference problem of traditional virtual pixels. In other embodiments, the display unit 20 can be formed by a plurality of pixel arrays 10 arranged in an array and spliced with each other, which can also overcome the edge color difference problem of traditional virtual pixels.

[0069] It can be clearly understood by those skilled in the art that, for the convenience and brevity of description, only the above division of each functional unit and module is exemplified, and in actual application, the above functions can be completed by different functional units and modules according to needs, that is, the internal structure of the device is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in one processing unit, or each unit can exist physically, or two or more units can be integrated in one unit, and the integrated unit can be realized in the form of hardware or software. In addition, the specific names of each functional unit and module are only for easy distinction, and do not limit the protection scope of the present application. The specific working process of the units and modules in the system can refer to the corresponding process in the foregoing method embodiments, which will not be described here.

[0070] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described or recorded in detail in a certain embodiment can refer to the related description of other embodiments.

[0071] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A pixel array, comprising: The pixel array comprises: a plurality of pixel units arranged in an array, each of the pixel units comprising light emitting chips of at most two light emitting colors; pixel rows at four peripheral edges of the pixel array comprise the light emitting chips of at least three light emitting colors, and pixel columns at four peripheral edges of the pixel array comprise the light emitting chips of at least three light emitting colors.

2. The pixel array of claim 1, wherein, The light emitting color arrangement order of any two adjacent rows of the pixel units is different, and the light emitting color arrangement order of any two adjacent columns of the pixel units is different.

3. The pixel array of claim 2, wherein, Each of the pixel units comprises light emitting chips of one light emitting color, and the light emitting chips comprise any one of red light emitting chips, green light emitting chips and blue light emitting chips.

4. The pixel array of any of claims 1 to 3, wherein, The pixel array further comprises at least three first signal lines and at least one second signal line; the first signal lines are connected to first ends of the light emitting chips, and the second signal line is connected to second ends of the light emitting chips.

5. The pixel array of claim 4, wherein, Each of the pixel units in the pixel array is arranged in a matrix of three rows and three columns, each row of the pixel units comprises the light emitting chips of three colors, and each column of the pixel units comprises the light emitting chips of three colors.

6. The pixel array of claim 5, wherein, The pixel array comprises nine first signal lines and one second signal line, every three first signal lines are connected to the first ends of the light emitting chips in one column of the pixel units, and the second signal line is connected to the second ends of the light emitting chips in three rows of the pixel units.

7. The pixel array of claim 4, wherein, The pixel array further comprises blank units, and each row and each column of the pixel array comprises at least one blank unit.

8. The pixel array of claim 7, wherein, Each of the blank units is not adjacent to any other blank unit.

9. The pixel array of claim 8, wherein, Each of the pixel units and the blank units in the pixel array is arranged in a matrix of four rows and four columns.

10. The pixel array of claim 9, wherein, The pixel array comprises six first signal lines and two second signal lines, every three first signal lines are connected to the first ends of the light emitting chips in two columns of the pixel units, and each second signal line is connected to the second ends of the light emitting chips in two rows of the pixel units.

11. The pixel array of claim 9, wherein, The pixel array comprises twelve first signal lines and one second signal line, every three first signal lines are connected to the first ends of the light emitting chips in one column of the pixel units, and the second signal line is connected to the second ends of the light emitting chips in four rows of the pixel units.

12. A display unit, characterized by The pixel array comprises the pixel array according to any one of claims 1 to 11.

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