CN110459537A - Display device - Google Patents

Abstract

The present disclosure provides a display device, including an LED chip array, including N1 rows and N2 columns of LED chips, each row of LED chips is arranged in a cyclical manner according to a first color, a second color, and a third color, and the cathode and anode of the LED chip are respectively located on the upper surface and the lower surface; a display screen, including N1 first electrodes arranged in parallel and equidistantly in a first direction, each first electrode is electrically connected to the upper surface of a row of LED chips; a substrate, including N2 second electrodes arranged in parallel and equidistantly in a second direction, each second electrode is electrically connected to the lower surface of a column of LED chips; a control module, electrically connected to the N1 first electrodes and the N2 second electrodes, for outputting electrical signals to the first electrodes and the second electrodes to control part of the LED chips in two rows of LED chips to light up as multiple pixel units at a time, each pixel unit includes three LED chips arranged in a triangle and having different colors. The display device provided by the embodiment of the present disclosure can reduce costs and improve manufacturing reliability.

Description

display device

technical field

The present disclosure relates to the field of display technology, in particular, to a display device that includes more pixels per unit area and can overcome the problems of small-size and small-pitch LED manufacturing processes.

Background technique

With the development of display technology, improving the resolution has become an important research topic in the field. Reducing the volume of LED chips and reducing the pitch of LED chips to increase the number of LED chips per unit area has become a conventional means for improving the resolution of display devices.

At present, the industry uses flip chip (Flip Chip) combined with mass transfer to produce micro-miniature LEDs. In this technology, when the chip size is less than 30 μm, the pad size at the bottom of the flip chip will be less than 10 μm, which is not easy to use in the process, and It is prone to problems such as difficult crystal bonding and too close chip pads to cause short circuit of tin climbing. Therefore, based on the prior art, it is difficult to further increase the number of LED chips in a unit area, thereby limiting the resolution of the display device.

It should be noted that the information disclosed in the above background section is only for enhancing the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art.

Contents of the invention

The purpose of the present disclosure is to provide a display device for overcoming the limitations and defects of related technologies at least to a certain extent, such as the limited number of pixels in a certain display area, and the reduction of LED size and spacing, which may easily lead to continuous soldering in the manufacturing process. question.

According to one aspect of the present disclosure, there is provided a display device, comprising:

The LED chip array includes LED chips in N1 rows and N2 columns. The LED chips in each row are arranged in an equidistant cycle according to the first color, the second color, and the third color. The cathode and anode of the LED chip are respectively located on the upper surface and the lower surface;

A display screen, including N1 first electrodes arranged parallel and equidistant in the first direction, each of the first electrodes is electrically connected to the upper surface of a row of the LED chips;

The substrate includes N2 second electrodes arranged in parallel and equidistant in the second direction, each of the second electrodes is electrically connected to the lower surface of a column of the LED chip;

A control module, electrically connected to the N1 first electrodes and the N2 second electrodes, for outputting electrical signals to the first electrodes and the second electrodes to control two rows of LED chips at a time The LED chip is turned on simultaneously as a plurality of pixel units, and each pixel unit includes three LED chips arranged in a triangle and having different colors.

In an exemplary embodiment of the present disclosure, each pixel unit includes three LED chips belonging to two rows and three columns, including two upper row LED chips and one lower row LED chip, or one upper row LED chip and one lower row LED chip. For the two downstream LED chips, there is a non-lit LED chip between the two LED chips in the same row in the same pixel unit.

In an exemplary embodiment of the present disclosure, there is an interval between every two pixel units without an illuminated LED chip, and the interval includes an interval along the first direction and an interval along the second direction. .

In an exemplary embodiment of the present disclosure, the control module is configured to: determine the number of non-lit LED chips separated by two pixel units according to the display control signal.

In an exemplary embodiment of the present disclosure, the non-lit LED chips separated by two pixel units form a row or a column.

In an exemplary embodiment of the present disclosure, the LED chips in the pixel unit respectively belong to the nth row and the n+2th row, or, the LED chips in the pixel unit respectively belong to the nth row and the nth row +1 row, where n ∈ [1,N1].

In an exemplary embodiment of the present disclosure, the control module is configured to: determine the number of scans and the scan frequency of each row of the LED chips according to the display control signal.

In an exemplary embodiment of the present disclosure, the first electrode and/or the second electrode is ITO conductive glass.

In an exemplary embodiment of the present disclosure, the substrate is a transparent substrate.

In an exemplary embodiment of the present disclosure, the first color, the second color, and the third color are red, green, and blue, respectively.

According to one aspect of the present disclosure, there is provided a display device, comprising:

The LED chip array includes LED chips in N1 rows and N2 columns, wherein the LED chips are only arranged at positions where odd rows and odd columns intersect and even rows and even columns intersect, or the LED chips are only arranged at odd rows and even columns intersect The position where even rows and odd columns intersect, the color of each LED chip is different from that of adjacent LED chips, and the anode and cathode of the LED chip are located on the upper surface and the lower surface, respectively;

A display screen, including N1 first electrodes arranged parallel and equidistant in the first direction, each of the first electrodes is electrically connected to the upper surface of a row of the LED chips;

The substrate includes N2 second electrodes arranged parallel and equidistant in the second direction, and each of the second electrodes is electrically connected to the lower surface of a column of the LED chips.

In an exemplary embodiment of the present disclosure, it also includes:

A control module, electrically connected to the N1 first electrodes and the N2 second electrodes, for outputting electrical signals to the first electrodes and the second electrodes to control two rows of LED chips at a time The LED chip is turned on simultaneously as a plurality of pixel units, and each pixel unit includes three LED chips arranged in a triangle and having different colors.

In an exemplary embodiment of the present disclosure, there is an interval between every two pixel units without an illuminated LED chip, and the interval includes an interval in the first direction and an interval in the second direction. interval in the direction.

In an exemplary embodiment of the present disclosure, the control module is configured to: determine the number of non-lit LED chips spaced between every two pixels according to the display control signal.

In an exemplary embodiment of the present disclosure, there are one or two non-lit LED chips separated by two pixel units.

In an exemplary embodiment of the present disclosure, the control module is configured to: determine the number of scans and the scan frequency of each row of the LED chips according to the display control signal.

In an exemplary embodiment of the present disclosure, the first electrode and/or the second electrode is ITO conductive glass.

In an exemplary embodiment of the present disclosure, the substrate is a transparent substrate.

In an exemplary embodiment of the present disclosure, the row pitch of the LED chip array is greater than or equal to the column pitch.

In an exemplary embodiment of the present disclosure, the LED chips include red, blue and green LED chips.

In an exemplary embodiment of the present disclosure, the display screen includes a glass screen, a plastic screen, a sapphire screen or a flexible screen.

In an exemplary embodiment of the present disclosure, the substrate is an opaque substrate, including a printed circuit substrate, a ceramic substrate, a semiconductor substrate, a plastic substrate or a flexible substrate.

In an exemplary embodiment of the present disclosure, the manufacturing material of the LED chip includes nitride, gallium nitride, gallium arsenide, gallium phosphide or silicon.

In the display device provided by the embodiments of the present disclosure, by using three LED chips located in two rows and three columns to form a pixel unit, more pixels can be realized by using the same number of LED chips in the same unit area; The upper surface and the lower surface of the LED chip are provided with common electrodes, which can avoid the continuous welding caused by the small size and spacing of the LED chip during the manufacturing process, and provide technical guarantee for further reducing the size and spacing of the LED chip. Therefore, the technical solutions provided by the embodiments of the present disclosure can set smaller-sized wafers and smaller wafer pitches, realize more pixels in the same unit area, greatly increase resolution, reduce costs as much as possible, and improve process reliability.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure. Apparently, the drawings in the following description are only some embodiments of the present disclosure, and those skilled in the art can obtain other drawings according to these drawings without creative efforts.

FIG. 1A and FIG. 1B schematically illustrate the structure of a display device 100 in an exemplary embodiment of the present disclosure.

FIG. 2 is a schematic plan view of the electrical connection relationship of the display device 100 in an embodiment of the present disclosure.

3A to 3D are schematic structural diagrams of pixel units of the display device 100 in an exemplary embodiment of the present disclosure. .

4A and 4B are schematic diagrams showing the effect of the pixel units shown in FIGS. 3A to 3D .

FIG. 5 is a schematic diagram of another pixel unit in an embodiment of the disclosure.

FIG. 6 is a schematic diagram of spacing between pixel units in an embodiment of the present disclosure.

FIG. 7A and FIG. 7B are schematic structural diagrams of another display device 700 provided in the present disclosure.

FIG. 8 is a schematic plan view of an electrical connection relationship of a display device 700 in an embodiment of the present disclosure.

FIG. 9 is a schematic diagram of the effect of a triangular pixel unit in a display device 700 in an embodiment of the present disclosure.

FIG. 10A and FIG. 10B are schematic diagrams of pixel unit arrangement of a display device 700 in an embodiment of the present disclosure.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and will fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details being omitted, or other methods, components, devices, steps, etc. may be adopted. In other instances, well-known technical solutions have not been shown or described in detail to avoid obscuring aspects of the present disclosure.

In addition, the drawings are only schematic illustrations of the present disclosure, the same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be implemented in software, or in one or more hardware modules or integrated circuits, or in different network and/or processor means and/or microcontroller means.

Exemplary implementations of the present disclosure will be described in detail below in conjunction with the accompanying drawings.

FIG. 1A and FIG. 1B schematically illustrate the structure of a display device in an exemplary embodiment of the present disclosure.

Referring to FIG. 1A and FIG. 1B , the display device 100 may include:

The LED chip array 11 includes LED chips 111 in N1 rows and N2 columns. Each row of LED chips is arranged in a cycle of equal intervals according to the first color, the second color, and the third color. The cathode and anode of the LED chip are respectively located on the upper surface and the lower surface. ;

The display screen 12 includes N1 first electrodes 121 arranged parallel and equidistant in the first direction, and each first electrode is electrically connected to the upper surface of a row of LED chips;

The substrate 13 includes N2 second electrodes 131 arranged parallel and equidistant in the second direction, and each second electrode is electrically connected to the lower surface of a row of LED chips;

The control module 14 is electrically connected to N1 first electrodes 121 and N2 second electrodes 131, and is used to output electrical signals to the first electrodes 121 and the second electrodes 131 to control part of the LED chips in two rows of LED chips at a time as multiple The pixel units light up at the same time, and each pixel unit includes three triangularly arranged LED chips with different colors.

Wherein, the display screen 12 can be, for example, a glass screen, a plastic screen, a sapphire screen or a flexible screen; the manufacturing material of the LED chip includes nitride, gallium nitride, gallium arsenide, gallium phosphide or silicon.

In some embodiments, both the first electrode 121 and the second electrode 131 are ITO conductive glass, at this time, the substrate 13 may be a transparent substrate. In some other embodiments, the first electrode 121 can be ITO conductive glass, and the second electrode 131 can be copper or other conductive materials. At this time, the substrate 13 can be an opaque substrate, including a printed circuit substrate, a ceramic substrate, a semiconductor substrate, a plastic substrate or flexible substrate, etc. Embodiments of the present disclosure are not limited to the materials of the display screen, the substrate, and the LED chip.

FIG. 2 is a schematic plan view showing the electrical connection relationship of the device 100 in an embodiment of the present disclosure.

Referring to FIG. 2 , in one embodiment, the first color, the second color, and the third color are red, green, and blue, respectively. The first electrode 121 is connected to the control module 14 as a common electrode connected to the cathode or anode of the LED chip, and correspondingly, the second electrode 131 is connected to the control module 14 as a common electrode connected to the anode or cathode of the LED chip. In the embodiment of the present disclosure, the upper surface of the LED chip can be either an anode or a cathode, and correspondingly, the lower surface of the LED chip can be either a cathode or an anode. The present disclosure does not limit the polarity of the upper and lower surfaces of the LED chip.

Since the first electrode 121 and the second electrode 131 are respectively connected to the upper and lower surfaces of the LED chip, it can overcome the problem of tin short circuit caused by too small chip size or too small spacing, and can greatly reduce the limitation on chip size or chip spacing. Great extension with possibilities for increasing resolution.

3A to 3D are schematic diagrams of a pixel unit in an exemplary embodiment of the present disclosure.

Referring to FIG. 3A to FIG. 3D , in an exemplary embodiment of the present disclosure, each pixel unit includes three LED chips of different colors belonging to two rows and three columns, or includes two LED chips in an upper row and one LED chip in a lower row. chip (as shown in Fig. 3A and Fig. 3C), or include an upper row LED chip and two lower row LED chips (as shown in Fig. 3B and Fig. 3D), and include a non-lit LED chip between two LED chips in the same row in the same pixel unit LED chips.

In the embodiment shown in FIG. 3A to FIG. 3D , the three LED chips in the pixel unit are respectively located in row n and row n+1 in the array, n∈[1, N1]. At this time, in order to obtain a good luminous effect for the pixel unit, the row spacing of the LED chip array can be set to be greater than the column spacing, so that the triangular pixel unit has more balanced three sides.

It can be seen from the embodiments shown in Figures 3A to 3D that using the same number of nine LED chips, only three pixel units can be formed in the related art, but four pixel units with different center positions can be formed in the embodiment of the present disclosure. Pixel units, this effect can greatly increase the number and density of pixel units after the number is enlarged.

4A and 4B are schematic diagrams showing the effect of the pixel units shown in FIGS. 3A to 3D .

Referring to FIG. 4A , in the case of 24 LED chips of 6*4, only 8 pixel units of 2*4 can be realized in the prior art.

In Figure 4B, four pixel units from A1 to A4 can be implemented in the horizontal direction, and each unit can have two implementation methods: upper triangle and lower triangle; vertically, three rows of pixel units A1 to C1 can be realized, and one can realize 4*3 =12 pixel units, and each pixel unit has two implementation methods, one can implement 12*2=24 pixel units, which provides favorable conditions for increasing the resolution. Since the common electrodes are respectively connected to the upper and lower surfaces of the LED chips, the problem of short-circuiting with tin can be effectively avoided, and more LED chips can be arranged per unit area than in the prior art. With the formation of pixel units as shown in Figure 4B, more LED chips can be used. The high-density LED chip arrangement realizes more pixel units, which greatly increases the resolution of the display device.

FIG. 5 is a schematic diagram of another pixel unit in an embodiment of the disclosure.

In the embodiment shown in FIG. 5 , the three LED chips in the pixel unit 12 are respectively located in row n and row n+2 in the array, n∈[1, N1]. At this time, in order to obtain a good luminous effect for the pixel unit, the row spacing of the LED chip array can be set equal to the column spacing, so that the triangular pixel unit has more balanced three sides.

Similarly, the pixel unit structure shown in FIG. 5 can also achieve denser pixel distribution, and cooperate with the common electrode connecting the upper and lower surfaces of the LED chip to greatly increase the resolution of the display device.

In some embodiments, in order to achieve a better luminous effect, there may be an interval between every two pixel units with an LED chip that is not turned on, and the interval includes an interval along the first direction and an interval along the second direction.

FIG. 6 is a schematic diagram of spacing between pixel units in an embodiment of the present disclosure.

Referring to FIG. 6, in the first direction (i.e. row direction), a column of LED wafers can be spaced between two pixel units, and in the second direction (i.e. column direction), a row of LED wafers can be spaced between two pixel units, so that Get a better glow effect. In addition, the adjustment of the spacing between pixel units can also be realized by setting the row spacing and the column spacing.

Due to the dense arrangement of LED chips, the control module 14 can determine the number of LED chips that are not lighted between two pixel units according to the display control signal, adjust the spacing between pixel units, and achieve a more delicate display effect or A wider variety of display effects can be achieved through long intervals. In addition, in an exemplary embodiment of the present disclosure, the control module can also determine the number of scans and the scan frequency of each row of LED wafers according to the display control signal, so as to achieve more display effects.

To sum up, the display device 100 provided by the embodiment of the present disclosure can avoid short-circuiting with tin during soldering caused by too small size or too small pitch of the LED chip by setting the common electrode connected to the upper and lower surfaces of the LED chip, thereby allowing the display device 100 to be set within a unit area. LED chips with smaller spacing and smaller size increase the distribution density of LED chips; in addition, by setting triangular pixel units, the distribution of more pixel units can be realized on the basis of the same number of LED chips, providing more pixels The spacing and position setting of the units can further increase the resolution of the display device.

FIG. 7A and FIG. 7B are schematic structural diagrams of another display device 700 provided in the present disclosure.

7A and 7B, the display device 700 may include:

The LED chip array 71 includes N1 rows and N2 columns of LED chips 711, wherein the LED chips are only arranged at the positions where odd rows and columns intersect and the positions where even rows and even columns intersect, or the LED chips are only arranged at positions where odd rows and even columns intersect and At the intersection of even rows and odd columns, the color of each LED chip is different from that of adjacent LED chips, and the anode and cathode of the LED chip are located on the upper surface and the lower surface respectively;

The display screen 72 includes N1 first electrodes arranged parallel and equidistant in the first direction, and each first electrode is electrically connected to the upper surface of a row of LED chips;

The substrate 73 includes N2 second electrodes arranged parallel and equidistant in the second direction, and each second electrode is electrically connected to the lower surface of a row of LED chips.

Wherein, the display screen 72 can be, for example, a glass screen, a plastic screen, a sapphire screen or a flexible screen; the manufacturing material of the LED chip 711 includes nitride, gallium nitride, gallium arsenide, gallium phosphide or silicon.

In some embodiments, both the first electrode 721 and the second electrode 731 are ITO conductive glass, and at this time, the substrate 73 may be a transparent substrate. In some other embodiments, the first electrode 721 can be ITO conductive glass, and the second electrode 731 can be copper or other conductive materials. At this time, the substrate 73 can be an opaque substrate, including a printed circuit substrate, a ceramic substrate, a semiconductor substrate, a plastic substrate, etc. substrate or flexible substrate, etc. Embodiments of the present disclosure are not limited to the materials of the display screen, the substrate, and the LE chip.

FIG. 8 is a schematic plan view of an electrical connection relationship of a display device 700 in an embodiment of the present disclosure.

Referring to FIG. 8 , in some embodiments, the LED chips in the LED chip array 71 are only arranged at positions where odd rows and columns intersect and positions where even rows and even columns intersect, for example, the first column in the first row, the third row in the first row column, first row and fifth column, second row and second column, second row and fourth column, third row and first column, third row and third column, third row and fifth column, and so on.

In some other embodiments, the LED chips in the LED chip array 71 can also be arranged only at the positions where the odd-numbered rows and even-numbered columns cross and the positions where the even-numbered rows and odd-numbered columns cross, for example, the second column in the first row, the fourth column in the first row , the first column of the second row, the third column of the second row, the fifth column of the second row, the second column of the third row, the fourth column of the third row, and so on.

In the embodiment shown in FIG. 8, the display device further includes a control module 74 electrically connected to N1 first electrodes and N2 second electrodes, and is used to output electrical signals to the first electrodes and the second electrodes to control two rows of LEDs at a time. Part of the LED chips in the chip light up simultaneously as multiple pixel units, and each pixel unit includes three LED chips arranged in a triangle with different colors.

In the arrangement of LED chips shown in Figure 8, the colors of the LED chips are, for example, red, green, and blue. Three LED chips in a column form a triangular pixel unit.

In order to improve the display effect or process considerations, in some cases, those skilled in the art tend to use larger-sized LED chips. At this time, setting too many chips in the same row will cause the chip pitch to be too small and cause process difficulties. Therefore, The triangular pixel unit can be realized by arranging LED wafer pixel units arranged in a triangle.

FIG. 9 is a schematic diagram of the effect of a triangular pixel unit in a display device 700 in an embodiment of the present disclosure.

Referring to Fig. 9, compared with the prior art, a total of 27 LED chips in six rows can form seven triangular pixel units C1-C7 in the horizontal direction, and five triangular pixel units A1-E1 in the vertical direction, that is, a total of Realizing 35 pixel units, compared with the prior art, can realize higher density pixel unit arrangement (the prior art can only realize 9 pixel unit arrangement through 27 LED wafers), saving cost.

FIG. 10A and FIG. 10B are schematic diagrams of pixel unit arrangement of a display device 700 in an embodiment of the present disclosure.

Referring to FIG. 10A , in some embodiments, in order to achieve better luminous effect, several unlit LED chips, such as one or two, may be spaced between the pixel units in the first direction or the second direction. In addition, the control module 74 can also determine the number of non-lit LED chips between every two pixels according to the display control signal, as shown in FIG. 10B . The control module 74 can also determine the scanning times and scanning frequency of each row of LED wafers according to the display control signal, so as to achieve more display effects.

In summary, the display devices shown in Figures 7A to 10B can realize more pixel units by setting pixel units arranged in a triangle. In addition, by setting a common electrode connecting the upper surface and the lower surface of the LED chip, the LED chip can be avoided. The technical difficulties brought about by the reduction of size and spacing greatly improve the resolution of the display device.

In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to the exemplary embodiments of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above figures do not imply or limit the chronological order of these processes. In addition, it is also easy to understand that these processes may be executed synchronously or asynchronously in multiple modules, for example.

Other embodiments of the present disclosure will be readily apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any modification, use or adaptation of the present disclosure, and these modifications, uses or adaptations follow the general principles of the present disclosure and include common knowledge or conventional technical means in the technical field not disclosed in the present disclosure . The specification and examples are to be considered exemplary only, with the true scope and concept of the disclosure indicated by the appended claims.

Claims (20)

1. A display device, characterized in that, comprising: The LED chip array includes LED chips in N1 rows and N2 columns. The LED chips in each row are arranged in an equidistant cycle according to the first color, the second color, and the third color. The cathode and anode of the LED chip are respectively located on the upper surface and the lower surface; A display screen, including N1 first electrodes arranged parallel and equidistant in the first direction, each of the first electrodes is electrically connected to the upper surface of a row of the LED chips; The substrate includes N2 second electrodes arranged in parallel and equidistant in the second direction, each of the second electrodes is electrically connected to the lower surface of a column of the LED chip; A control module, electrically connected to the N1 first electrodes and the N2 second electrodes, for outputting electrical signals to the first electrodes and the second electrodes to control two rows of LED chips at a time The LED chip is turned on simultaneously as a plurality of pixel units, and each pixel unit includes three LED chips arranged in a triangle and having different colors. 2. The display device according to claim 1, wherein each pixel unit includes three LED chips belonging to two rows and three columns, including two LED chips in the upper row and one LED chip in the lower row, or one LED chip in the lower row. An LED chip in the upper row and two LED chips in the lower row, and a non-lit LED chip is included between the two LED chips in the same row in the same pixel unit. 3. The display device according to claim 2, wherein the LED chips in the pixel units respectively belong to the nth row and the n+2th row, or, the LED chips in the pixel units respectively belong to the nth row row and row n+1, where n∈[1,N1]. 4. The display device according to claim 1, wherein an LED chip that is not lit is spaced between every two pixel units, and the space includes the space along the first direction and the space along the first direction. Second direction spacing. 5. The display device according to claim 4, wherein the control module is configured to: determine the number of non-lit LED chips separated by two pixel units according to the display control signal. 6 . The display device according to claim 4 , wherein the non-lit LED chips separated by two pixel units form a row or a column. 7 . The display device according to claim 1 , wherein the control module is configured to: determine the scanning times and scanning frequency of each row of the LED chips according to the display control signal. 8. The display device according to claim 1, wherein the first electrode and/or the second electrode is ITO conductive glass. 9. The display device according to claim 8, wherein the substrate is a transparent substrate. 10 . The display device according to claim 1 , wherein the first color, the second color, and the third color are red, green, and blue, respectively. 11 . 11. A display device, characterized in that it comprises: The LED chip array includes LED chips in N1 rows and N2 columns, wherein the LED chips are only arranged at positions where odd rows and odd columns intersect and even rows and even columns intersect, or the LED chips are only arranged at odd rows and even columns intersect The position where even rows and odd columns intersect, the color of each LED chip is different from that of adjacent LED chips, and the anode and cathode of the LED chip are located on the upper surface and the lower surface, respectively; A display screen, including N1 first electrodes arranged parallel and equidistant in the first direction, each of the first electrodes is electrically connected to the upper surface of a row of the LED chips; The substrate includes N2 second electrodes arranged parallel and equidistant in the second direction, and each of the second electrodes is electrically connected to the lower surface of a column of the LED chips. 12. The display device according to claim 11, further comprising: A control module, electrically connected to the N1 first electrodes and the N2 second electrodes, for outputting electrical signals to the first electrodes and the second electrodes to control two rows of LED chips at a time The LED chip is turned on simultaneously as a plurality of pixel units, and each pixel unit includes three LED chips arranged in a triangle and having different colors. 13. The display device according to claim 12, wherein an LED chip that is not lit is spaced between every two pixel units, and the space includes spaced in the first direction and in the first direction. spaced in the second direction. 14. The display device according to claim 13, wherein the control module is configured to: determine the number of non-lit LED chips spaced between every two pixels according to the display control signal. 15. The display device according to claim 13, wherein there are one or two non-lit LED chips separated by two pixel units. 16 . The display device according to claim 12 , wherein the control module is configured to: determine the scanning times and scanning frequency of each row of the LED chips according to the display control signal. 17. The display device according to claim 11, wherein the first electrode and/or the second electrode is ITO conductive glass. 18. The display device according to claim 17, wherein the substrate is a transparent substrate. 19. The display device according to claim 11, wherein the row pitch of the LED chip array is greater than or equal to the column pitch. 20. The display device according to any one of claims 11-19, wherein the LED chips include red, blue and green LED chips.