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, the plurality of pixel units comprise a plurality of white pixel units and a plurality of color pixel units, each white pixel unit comprises at least one white light-emitting chip, and each color pixel unit comprises at least one color light-emitting chip. Each color pixel unit comprises a light-emitting chip with at most two light-emitting colors. Since the pixel rows and the pixel columns of the pixel array, which are positioned on the peripheral edge, comprise the light-emitting chips with at least three light-emitting colors, the condition of color missing at the edge of the pixel array is avoided. Meanwhile, the overall brightness of the pixel array can be improved through the white pixel units, the situation that the overall brightness is too low due to the fact that sub-pixel rendering is adopted traditionally is avoided, and the white pixel units can also emit light independently to be used for illumination.

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 UTILITY MODEL

[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, the plurality of pixel units comprising a plurality of white pixel units and a plurality of color pixel units, each white pixel unit comprising at least one white light emitting chip, and each color pixel unit comprising light emitting chips of at most two color light emitting colors; a pixel row at a four-side edge of the pixel array comprising at least one white light emitting chip and at least three color light emitting chips of color light emitting colors, and a pixel column at the four-side edge of the pixel array comprising at least one white light emitting chip and at least three color light emitting chips of color light emitting colors.

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

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

[0008] In an embodiment, each white pixel unit is not adjacent to each other.

[0009] In an embodiment, the pixel units in the pixel array are arranged in a four-row and four-column matrix, and each row of pixel units and / or each column of pixel units comprises one white pixel unit and three color pixel units.

[0010] In one embodiment, the four pixel units in the first row, from the first column, in the first direction, are a first white pixel unit, a first red pixel unit, a first green pixel unit, and a first blue pixel unit, respectively; the four pixel units in the second row, from the first column, in the first direction, are a second green pixel unit, a second blue pixel unit, a second white pixel unit, and a second red pixel unit, respectively; the four pixel units in the third row, from the first column, in the first direction, are a third red pixel unit, a third white pixel unit, a third blue pixel unit, and a third green pixel unit, respectively; and the four pixel units in the fourth row, from the first column, in the first direction, are a fourth blue pixel unit, a fourth green pixel unit, a fourth red pixel unit, and a fourth white pixel unit, respectively.

[0011] In one embodiment, the display unit further includes four first signal lines and two second signal lines; and the light emitting chip is connected between one of the first signal lines and one of the second signal lines.

[0012] In one embodiment, every four first signal lines are connected to the anode of the light emitting chip in two columns of the pixel units, and every second signal line is connected to the cathode of the light emitting chip in two rows of the pixel units.

[0013] In one embodiment, every four first signal lines are connected to the cathode of the light emitting chip in two columns of the pixel units, and every second signal line is connected to the anode of the light emitting chip in two rows of the pixel units.

[0014] The second aspect of the embodiment of the present application provides a display unit, including the pixel array as described above.

[0015] Compared with the prior art, the embodiment of the present application has the beneficial effect that, since the pixel rows and the pixel columns at the four peripheral edges of the pixel array each include light emitting chips of at least three color light emitting colors, the lack of color does not occur at the edges of the pixel array.

[0016] Meanwhile, the white pixel unit can improve the overall brightness of the pixel array, avoid the overall brightness being too dark caused by the traditional sub-pixel rendering, and the white pixel unit can also emit light alone for illumination. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 a schematic diagram of the pixel array provided by one embodiment of the present application;

[0018] Figure 2 another schematic diagram of the pixel array provided by one embodiment of the present application;

[0019] Figure 3A circuit schematic diagram of a pixel array provided by an embodiment of the present application is shown in FIG. 1.

[0020] Figure 4 Another circuit schematic diagram of a pixel array provided by an embodiment of the present application is shown in FIG. 2.

[0021] Figure 5 A schematic diagram of a display unit provided by an embodiment of the present application is shown in FIG. 3. DETAILED DESCRIPTION

[0022] 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.

[0023] 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.

[0024] 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 therefore cannot be understood as indicating or implying 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.

[0025] 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.

[0026] Figure 1 A schematic diagram of a pixel array provided by an embodiment of the present application is shown in FIG. 1, only the parts related to the present embodiment are shown for the convenience of description, and the details are as follows:

[0027] A pixel array 10 includes a plurality of pixel units arranged in an array, the plurality of pixel units including a plurality of white pixel units 100 and a plurality of color pixel units 200, each white pixel unit 100 including at least one white light emitting chip, and each color pixel unit 200 including light emitting chips of at most two color light emitting colors.

[0028] The pixel rows of the pixel array 10 located at the four edges include at least one white light-emitting chip and at least three colors of light-emitting chips, and the pixel columns of the pixel array 10 located at the four edges include at least one white light-emitting chip and at least three colors of light-emitting chips.

[0029] It is understandable that, since the pixel rows and columns of the pixel array 10 located at the four edges all include light-emitting chips with at least three colors, there will be no color loss at the edges of the pixel array 10.

[0030] At the same time, the white pixel unit 100 can improve the overall brightness of the pixel array 10, avoiding the situation of excessively dark overall brightness caused by traditional sub-pixel rendering. The white pixel unit 100 can also emit light independently for illumination.

[0031] In some embodiments, each row and each column of the pixel array 10 has a light-emitting chip with at least three colors of light emission.

[0032] In one embodiment, such as Figure 1 As shown, the order of the light emission colors of any two adjacent rows of pixel units is different, and the order of the light emission colors of any two adjacent columns of pixel units is also different.

[0033] It should be noted that, in order to maximize the display effect, it is necessary to avoid adjacent color pixel units 200 having the same color. This prevents the pixel array 10 from having a lack of a certain color light-emitting chip or an excessive number of a certain color light-emitting chips in a certain area. This would make it difficult to compensate for hardware defects even with color compensation methods, ultimately resulting in local color casts in the pixel array 10. For example, when the light-emitting color arrangement order of two adjacent rows of color pixel units 200 is the same, resulting in multiple light-emitting chips of the same color arranged sequentially, even with color compensation methods, a fine line pattern composed of light-emitting chips of the same color can be clearly seen when the pixel array 10 is working.

[0034] In one embodiment, each color pixel unit 200 includes a light-emitting chip of a certain color, and the light-emitting chip of the color pixel unit 200 includes any one of a red light-emitting chip, a green light-emitting chip, and a blue light-emitting chip.

[0035] It is understandable that when the color pixel unit 200 is used only to emit monochromatic light, one color pixel unit 200 may include only one light-emitting chip, or one color pixel unit 200 may include multiple light-emitting chips that emit the same type of light. When the color pixel unit 200 is used to emit multiple colors of light, one color pixel unit 200 may include multiple light-emitting chips that emit different colors of light.

[0036] By using three light-emitting chips that can emit red, green, and blue light respectively, and by adjusting the brightness of each chip, the light emitted by the three chips can be mixed to obtain visible light of all colors.

[0037] Specifically, in some embodiments, each row of color pixel units 200 in the pixel array 10 can emit red light, green light and blue light, and each column of color pixel units 200 can also emit red light, green light and blue light.

[0038] In one embodiment, such as Figure 1 As shown, the white pixel units 100 are not adjacent to each other.

[0039] It is understandable that since the white pixel unit 100 only emits white light, the individual white pixel units 100 are not adjacent to each other, which can prevent multiple white pixel units 100 from being connected together, thereby limiting the area of ​​a single white light region and improving the display effect of the pixel array 10.

[0040] In one embodiment, such as Figure 2 As shown, the pixel units in the pixel array 10 are arranged in a matrix of four rows and four columns, and each row of pixel units and / or each column of pixel units includes one white pixel unit 100 and three color pixel units 200. When each row of pixel units and each column of pixel units includes one white pixel unit 100 and three color pixel units 200, that is, there are a total of four white pixel units 100 and twelve color pixel units 200 in the pixel array 10 (wherein, the white pixel unit 100 includes the first white pixel unit 100a, the second white pixel unit 100b, the third white pixel unit 100c and the fourth white pixel unit 100d, and the color pixel unit 200 includes the first red pixel unit 200a, the first green pixel unit 200b, the first blue pixel unit 200c, the second green pixel unit 200d, the second blue pixel unit 200e, the second red pixel unit 200f, the third red pixel unit 200g, the third blue pixel unit 200h, the third green pixel unit 200i, the fourth blue pixel unit 200j, the fourth green pixel unit 200k and the fourth red pixel unit 200l).

[0041] It is understandable that, in the case where each row and each column of the pixel array 10 includes at least three colored pixel units 200 of different colors, if each colored pixel unit 200 can emit light of one color, in addition to the three colored pixel units 200 that emit red light, green light and blue light respectively, each row and each column can also have a pixel unit that can be configured as a white pixel unit 100.

[0042] It is understood that the pixel array 10 of this embodiment can reduce the number of light-emitting chips compared to a conventional pixel matrix where each pixel has three light-emitting chips. The pixel array 10 of this embodiment also requires fewer light-emitting chips in total compared to conventional virtual pixels. The white pixel unit 100 can compensate for the insufficient brightness caused by the fewer light-emitting chips.

[0043] In one embodiment, the four pixel units in the first row, starting from the first column along the first direction, are, in sequence, a first white pixel unit 100a, a first red pixel unit 200a, a first green pixel unit 200b, and a first blue pixel unit 200c; the four pixel units in the second row, starting from the first column along the first direction, are, in sequence, a second green pixel unit 200d, a second blue pixel unit 200e, a second white pixel unit 100b, and a second red pixel unit 200f; the four pixel units in the third row, starting from the first column along the first direction, are, in sequence, a third red pixel unit 200g, a third white pixel unit 100c, a third blue pixel unit 200h, and a third green pixel unit 200i; and the four pixel units in the fourth row, starting from the first column along the first direction, are, in sequence, a fourth blue pixel unit 200j, a fourth green pixel unit 200k, a fourth red pixel unit 200l, and a fourth white pixel unit 100d.

[0044] By arranging the color pixel units 200 in a reasonable manner, the color pixel units 200 of the three colors can be distributed as evenly as possible, thereby improving the display effect of the pixel array 10.

[0045] Specifically, the first direction refers to the direction in which the number of columns increases. Taking the four pixel units in the first row as an example, the first white pixel unit 100a is located in the first column, the first red pixel unit 200a is located in the second column, the first green pixel unit 200b is located in the third column, and the first blue pixel unit 200c is located in the fourth column.

[0046] In one embodiment, such as Figure 3 As shown, the pixel array 10 also includes four first signal lines and two second signal lines; the light-emitting chip is connected between one of the first signal lines and one of the second signal lines.

[0047] (The first signal line includes first signal line R#1, first signal line G#1, first signal line B#1, first signal line W#1, first signal line R#2, first signal line G#2, first signal line B#2 and first signal line W#2; the second signal line includes second signal line ROW#1 and second signal line ROW#2.)

[0048] The first signal lines can be used to transmit column signals, and the second signal lines can be used to transmit row signals, or the first signal lines can be used to transmit row signals, and the second signal lines can be used to transmit column signals. Driving electrical signals can be provided to each pixel unit through the first signal lines and the second signal lines to adjust the switching and brightness of each pixel unit.

[0049] The number of the first signal lines and the second signal lines can be set according to actual needs.

[0050] In an embodiment, as shown in Figure 3 , every four first signal lines are connected to the anodes of the light-emitting chips in two columns of pixel units, and every second signal line is connected to the cathodes of the light-emitting chips in two rows of pixel units.

[0051] As shown in Figure 3 , four first signal lines form a group, and one group of first signal lines can correspond to two columns of pixel units. One first signal line is connected to the pixel units of the same color in two columns of pixel units. Then, one group of first signal lines and one first signal line can control two rows and two columns of pixel units. Based on the arrangement order in the above embodiment, each kind of pixel unit in the two rows and two columns of pixel units only includes one, so that each pixel in the two rows and two columns of pixel units can be accurately controlled by one group of first signal lines and one first signal line.

[0052] The pixel array 10 can be connected to each pixel unit through only one second signal line, thereby reducing the number of signal lines, or a plurality of second signal lines can be used to be respectively connected to each pixel unit, so as to reduce the current flowing through a single second signal line.

[0053] In the case that the first end of the light-emitting chip is an anode and the second end of the light-emitting chip is a cathode, common cathode driving can be realized through the first signal lines and the second signal lines. Figure 3

[0054] In an embodiment, as shown in Figure 4 , every four first signal lines are connected to the cathodes of the light-emitting chips in two columns of pixel units, and every second signal line is connected to the anodes of the light-emitting chips in two rows of pixel units.

[0055] In the case that the first end of the light-emitting chip is an anode and the second end of the light-emitting chip is a cathode, common anode driving can be realized through the first signal lines and the second signal lines.

[0056] Figure 5 A schematic diagram of a display unit 20 provided by an embodiment of the present application is shown. For ease of illustration, only parts related to the present embodiment are shown, and details are as follows:

[0057] ​The display unit 20 comprises a carrier plate 30, a control module 40 and a plurality of pixel arrays 10 as any of the above embodiments, each color pixel unit 200 and white pixel unit 100 of the plurality of pixel arrays 10 are arranged on the carrier plate 30. The control module 40 can control the brightness of the light emitting chip in each white pixel unit 100 and color pixel unit 200 according to the received control signal.

[0058] It can be understood that the first signal line and the second signal line of the pixel array 10 can be arranged on the carrier plate 30, and each pixel unit can be bonded to the carrier plate 30.

[0059] The pixel units and the control module 40 can be arranged on the two sides or the same side of the carrier plate 30, and the corresponding control modules 40 of the plurality of pixel arrays 10 can be integrated on one controller.

[0060] The control module 40 can be electrically connected to each pixel unit through the carrier plate 30, control each pixel unit to switch different light emitting modes, for example, only control the color pixel unit 200 to emit light to display an image, or only control the white pixel unit 100 to emit light for illumination, or can control the white pixel unit 100 and the color pixel unit 200 to emit light at the same time.

[0061] The display unit 20 can control each pixel array 10 according to the received color control signal to obtain a corresponding picture.

[0062] 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.

[0063] Those skilled in the art can clearly understand that, for the convenience and brevity of description, only the above division of functional units and modules 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 or 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. The integrated unit can be realized in the form of hardware or software. In addition, the specific name of each functional unit or module is only for convenient distinction, and does not limit the protection scope of the present application. The specific working process of the unit or module in the above system can refer to the corresponding process in the above method embodiments, which will not be repeated here.

[0064] In the above embodiments, the description of each embodiment has its own focus, and the parts not described or recorded in a certain embodiment can be referred to the relevant description of other embodiments.

[0065] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacements for 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, the plurality of pixel units comprising a plurality of white pixel units and a plurality of color pixel units, each white pixel unit comprising at least one white light emitting chip, and each color pixel unit comprising light emitting chips of at most two color light emitting colors; a pixel row at a four-side edge of the pixel array comprising at least one white light emitting chip and at least three color light emitting chips of different color light emitting colors, and a pixel column at the four-side edge of the pixel array comprising at least one white light emitting chip and at least three color light emitting chips of different color light emitting colors.

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

3. The pixel array of claim 1, wherein, Each color pixel unit comprises light emitting chips of one color light emitting color, and the light emitting chips of the color pixel unit comprise any one of a red light emitting chip, a green light emitting chip, and a blue light emitting chip.

4. The pixel array of claim 1, wherein, Each white pixel unit is not adjacent to any other white pixel unit.

5. The pixel array of any of claims 1 to 4, wherein, The pixel units in the pixel array are arranged in a four-by-four matrix, each row of pixel units and / or each column of pixel units comprises one white pixel unit and three color pixel units.

6. The pixel array of claim 5, wherein, The four pixel units in the first row, from the first column and in a first direction, are a first white pixel unit, a first red pixel unit, a first green pixel unit, and a first blue pixel unit, respectively. The four pixel units in the second row, from the first column and in the first direction, are a second green pixel unit, a second blue pixel unit, a second white pixel unit, and a second red pixel unit, respectively.

7. The pixel array of claim 5, wherein, The four pixel units in the third row, from the first column and in the first direction, are a third red pixel unit, a third white pixel unit, a third blue pixel unit, and a third green pixel unit, respectively.

8. The pixel array of claim 7, wherein, The four pixel units in the fourth row, from the first column and in the first direction, are a fourth blue pixel unit, a fourth green pixel unit, a fourth red pixel unit, and a fourth white pixel unit, respectively.

9. The pixel array of claim 7, wherein, The pixel array further comprises four first signal lines and two second signal lines, and the light emitting chips are connected between one of the first signal lines and one of the second signal lines.

10. A display unit, characterized by Each four first signal lines are connected to the anodes of the light emitting chips in two columns of pixel units, and each second signal line is connected to the cathodes of the light emitting chips in two rows of pixel units. Each four first signal lines are connected to the cathodes of the light emitting chips in two columns of pixel units, and each second signal line is connected to the anodes of the light emitting chips in two rows of pixel units. The pixel array comprises any one of claims 1 to 9.

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