A sorting method and a sorting system for light emitting units

Abstract

The application provides a sorting method and a sorting system of a light-emitting unit. The sorting method comprises the following steps: providing a color comparison component, the color comparison component comprising a color comparison layer, the color comparison layer comprising a plurality of color comparison blocks; providing a plurality of light-emitting units, the plurality of light-emitting units being arranged opposite to the color comparison component, one light-emitting unit being arranged corresponding to at least one color comparison block; making the plurality of light-emitting units emit light, and the light emitted by the plurality of light-emitting units irradiating to the color comparison blocks at corresponding positions, the color comparison blocks performing color rendering to obtain corresponding color rendering results; providing a sorting component, and sorting the plurality of light-emitting units based on the color rendering results of the plurality of color comparison blocks corresponding to the plurality of light-emitting units. The light emitted by the light-emitting unit irradiates to the color comparison component, so that the plurality of color comparison blocks of the color comparison component absorb the light emitted by different light-emitting units to display different colors, thereby the sorting of the light-emitting units is performed through the color rendering difference of the plurality of color comparison blocks, and the sorting accuracy of the light-emitting unit is improved.

Description

Technical Field

[0001] This application belongs to the field of display technology, specifically relating to a sorting method and sorting system for light-emitting units. Background Technology

[0002] Mass transfer technology in display panel manufacturing is a key process for transferring at least hundreds of thousands of light-emitting units onto the backplane, offering advantages in high efficiency and high yield. Due to the large number of light-emitting units required for the display panel, and limitations imposed by the film quality of these units, it is difficult to meet product requirements in terms of brightness and wavelength uniformity. Therefore, the sorting of light-emitting units has become a major technical challenge for the mass production of display products. Summary of the Invention

[0003] This application provides a method and system for sorting light-emitting units to solve the technical problem of sorting multiple light-emitting units.

[0004] To solve the above-mentioned technical problems, this application adopts a technical solution as follows: a sorting method for light-emitting units, the sorting method comprising: providing a colorimetric component, the colorimetric component including a colorimetric layer, the colorimetric layer including a plurality of colorimetric blocks; providing a plurality of light-emitting units, the plurality of light-emitting units being arranged opposite to the colorimetric component, one light-emitting unit being correspondingly arranged with at least one colorimetric block; causing the plurality of light-emitting units to emit light, and after the light emitted by the plurality of light-emitting units illuminates the colorimetric blocks at corresponding positions, the colorimetric blocks perform color development to obtain corresponding color development results; and providing a sorting component to sort the plurality of light-emitting units based on the color development results of the plurality of colorimetric blocks corresponding to the plurality of light-emitting units.

[0005] Furthermore, one of the light-emitting units corresponds to one of the colorimetric blocks.

[0006] Furthermore, a light-shielding layer is provided between adjacent colorimetric blocks.

[0007] Furthermore, the step of providing a sorting component to sort the multiple light-emitting units based on the color development results of the multiple colorimetric blocks corresponding to the multiple light-emitting units includes:

[0008] Obtain the color development results for all the colorimetric blocks;

[0009] The multiple light-emitting units are grouped based on the color rendering results of each of the colorimetric blocks;

[0010] All the light-emitting units in the same group are transferred to the same substrate.

[0011] Furthermore, the step of grouping the multiple light-emitting units based on the color development results of each of the colorimetric blocks includes:

[0012] The color parameters of any two colorimetric blocks are selected and the difference between their color development results is calculated to obtain the corresponding difference between the color parameters.

[0013] The light-emitting units corresponding to any two colorimetric blocks that satisfy the color parameter difference being less than or equal to a first threshold are grouped together.

[0014] Furthermore, the step of grouping the multiple light-emitting units based on the color development results of each of the colorimetric blocks includes:

[0015] The difference between the optical parameters of the light emitted by the corresponding light-emitting unit is calculated by arbitrarily selecting the color development results of two colorimetric blocks and obtaining the difference between the corresponding optical parameters.

[0016] Any two light-emitting units whose difference in optical parameters is less than or equal to the second threshold are grouped together.

[0017] Furthermore, the step of grouping the multiple light-emitting units based on the color development results of each of the colorimetric blocks includes:

[0018] The color parameters corresponding to the color development results of all the colorimetric blocks are statistically analyzed, and the value range is determined based on the values ​​of the color parameters corresponding to the color development results of all the colorimetric blocks.

[0019] The numerical range is divided into multiple sub-numerical ranges, and the light-emitting units corresponding to multiple colorimetric blocks whose color parameter values ​​are located within the same sub-numerical range are grouped together.

[0020] Furthermore, the step of grouping the multiple light-emitting units based on the color development results of each of the colorimetric blocks includes:

[0021] The optical parameters of the light emitted by the corresponding light-emitting unit are calculated based on the color development results of all the colorimetric blocks.

[0022] The optical parameters of the light emitted by the light-emitting units corresponding to all the colorimetric blocks are statistically analyzed, and the numerical range is determined based on the values ​​of the optical parameters of the light emitted by the light-emitting units corresponding to all the colorimetric blocks.

[0023] The numerical range is divided into multiple sub-numerical ranges, and multiple light-emitting units whose optical parameter values ​​are located within the same sub-numerical range are grouped together.

[0024] Furthermore, the step of transferring all the light-emitting units in the same group to the same substrate includes:

[0025] All the light-emitting units in the same group are transferred to the same substrate by laser transfer; or...

[0026] All the light-emitting units in the same group are transferred to the same substrate by means of stamp transfer.

[0027] Another technical solution adopted in this application is: providing a sorting system for light-emitting units, the sorting system including a colorimetric component and a sorting component, wherein the colorimetric component includes a colorimetric layer, the colorimetric layer includes a plurality of colorimetric blocks, the plurality of colorimetric blocks are arranged opposite to a plurality of light-emitting units, the plurality of colorimetric blocks absorb the light emitted by the light-emitting units at corresponding positions and perform color rendering to obtain corresponding color rendering results; the sorting component is used to sort the plurality of light-emitting units based on the color rendering results of the plurality of colorimetric blocks corresponding to the plurality of light-emitting units.

[0028] Furthermore, the colorimetric component also includes a second substrate, with the colorimetric layer located on one side of the second substrate.

[0029] Furthermore, the second substrate is a transparent substrate.

[0030] Furthermore, the colorimetric blocks include photosensitive materials.

[0031] Furthermore, the colorimetric block includes a photochromic material, which includes at least one of spiropyran functional groups and azobenzene functional groups.

[0032] Furthermore, a light-shielding layer is provided between adjacent colorimetric blocks.

[0033] The beneficial effects of this application are as follows: Multiple light-emitting units are configured to correspond to at least one colorimetric block; the light emitted by these units illuminates the colorimetric blocks at corresponding positions, causing the colorimetric blocks to develop colors and yield corresponding color results; a sorting component is also provided to sort the multiple light-emitting units based on the color results of the corresponding colorimetric blocks. Sorting the light-emitting units based on the color differences of the colorimetric blocks improves the sorting accuracy and offers high sorting efficiency and low cost. Integrating the sorted light-emitting units—those corresponding to colorimetric blocks with nearly identical color results—improves the display uniformity of the display product, thereby ensuring optimal display performance. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort, wherein:

[0035] Figure 1 This is a flowchart illustrating an embodiment of the sorting method for light-emitting units of this application;

[0036] Figure 2 This is a schematic diagram of the structure of the light-emitting unit component and the colorimetric component of this application;

[0037] Figure 3 yes Figure 2 A top-view schematic diagram of the colorimetric results of the colorimetric layer in the colorimetric component;

[0038] Figure 4 yes Figure 1 A flowchart illustrating step S4 in the middle section;

[0039] Figure 5 yes Figure 4 A flowchart illustrating an embodiment of step S42;

[0040] Figure 6 yes Figure 4 A flowchart illustrating another embodiment of step S42;

[0041] Figure 7 This is a schematic diagram of the structure of the sorting component of this application. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0043] Please see Figure 1 , Figure 2 and Figure 3 A method for sorting light-emitting units includes:

[0044] S1: Provide a colorimetric component 20, which includes a colorimetric layer 22 and a plurality of colorimetric blocks 23.

[0045] The colorimetric component 20 displays different colors when exposed to different light sources. This color rendering function is mainly achieved by the colorimetric layer 22. When the colorimetric component 20 is illuminated by light emitted from a single light source, the colorimetric layer 22 displays a single color. When light emitted from multiple light sources is simultaneously applied to different positions of the colorimetric layer 22, different positions of the colorimetric layer 22 will display different colors. In one embodiment, the colorimetric layer 22 is divided into multiple colorimetric blocks 23. Light emitted from different light sources is used to illuminate the multiple colorimetric blocks 23 respectively. The color rendering result of each colorimetric block 23 is related to the optical parameters of the light emitted by the corresponding light source, so that the optical parameters of the light emitted by the light source can be determined through the color rendering result of the colorimetric block 23.

[0046] S2: Provide a light-emitting unit assembly, which includes a plurality of light-emitting units 12, and arrange the plurality of light-emitting units 12 opposite to the colorimetric component 20, with one light-emitting unit 12 corresponding to at least one colorimetric block 23.

[0047] Specifically, the light-emitting unit assembly includes a first substrate 11 and a plurality of light-emitting units 12 disposed on one side of the first substrate 11. The plurality of light-emitting units 12 are respectively disposed opposite to a plurality of colorimetric blocks 23 of the colorimetric layer 22 of the colorimetric assembly 20, so that the light emitted by the plurality of light-emitting units 12 can respectively illuminate the plurality of colorimetric blocks 23 of the colorimetric layer 22 of the colorimetric assembly 20. The plurality of colorimetric blocks 23 of the colorimetric layer 22 of the colorimetric assembly 20 can display different colors according to the optical parameters of the light emitted by the light-emitting units 12. The optical parameters of the light include light intensity, wavelength, etc. In other words, "the plurality of colorimetric blocks 23 display different colors" means that the optical parameters of the light emitted by the plurality of light-emitting units 12 corresponding to the plurality of colorimetric blocks 23 are different. In order to enable the colorimetric block 23 of the colorimetric layer 22 of the colorimetric component 20 to accurately receive the light emitted by the light-emitting unit 12 and accurately obtain the color rendering result corresponding to the light-emitting unit 12, in the preferred embodiment, one light-emitting unit 12 can be correspondingly set with one colorimetric block 23. At this time, the colorimetric block 23 can accurately receive the light emitted by the corresponding light-emitting unit 12, thereby reducing the interference of light emitted by other light-emitting units and improving the accuracy of the color rendering result.

[0048] S3: Make multiple light-emitting units 12 emit light, and after the light emitted by the multiple light-emitting units 12 illuminates the colorimetric block 23 at the corresponding position, the colorimetric block 23 performs color development to obtain the corresponding color development result.

[0049] After the light-emitting unit 12 emits light, the colorimetric block 23 corresponding to the light-emitting unit 12 can receive the light emitted by the light-emitting unit 12. The colorimetric block 23 performs color development. The color development results of the colorimetric blocks 23 corresponding to different light-emitting units 12 will be different, and of course, there are also colorimetric blocks 23 with the same color development results. In one embodiment, the wavelengths of the light emitted by different light-emitting units 12 have different values. However, this difference value is small and difficult to obtain directly. By setting up the colorimetric block 23, after the colorimetric block 23 receives the light emitted by the corresponding light-emitting unit 12, the color difference between different colorimetric blocks 23 is obvious. By comparing the color differences between different colorimetric blocks 23, it is convenient to sort the light-emitting units 12, and the sorting accuracy is effectively improved.

[0050] S4: Provide a sorting component 30 to sort multiple light-emitting units 12 based on the color rendering results of multiple colorimetric blocks 23 corresponding to multiple light-emitting units 12.

[0051] The sorting component 30 groups multiple light-emitting units 12 according to the color rendering results of multiple colorimetric blocks 23. For example, it can sort the light-emitting units 12 corresponding to colorimetric blocks 23 whose color rendering results meet preset conditions into a group. Since the colorimetric blocks 23 are set to correspond to the light-emitting units 12, the same type of light-emitting units 12 can be determined according to the color rendering results of the colorimetric blocks 23.

[0052] Please continue reading. Figure 2 and Figure 3 Each light-emitting unit 12 corresponds to a colorimetric block 23, and a light-shielding layer 24 is disposed between adjacent colorimetric blocks 23. The light-emitting unit 12 is disposed on one side of the first substrate 11, and emits light when powered on. Multiple colorimetric blocks 23 of the colorimetric layer 22 of the colorimetric assembly 20 are arranged opposite to the multiple light-emitting units 12 to receive light emitted by the light-emitting unit 12 at corresponding positions and perform color development; the colorimetric layer 22 includes multiple colorimetric blocks 23 spaced apart, with each colorimetric block 23 corresponding to one light-emitting unit 12. In one embodiment, multiple colorimetric blocks 23 are matched one-to-one with multiple light-emitting units 12, so that light emitted by a single light-emitting unit 12 illuminates the corresponding colorimetric block 23. The sorting component 30 includes an image acquisition device 31, a processor 32, and a transfer device 33. The image acquisition device 31 acquires the color development results of all colorimetric blocks 23. The processor 32 identifies the color development results of all colorimetric blocks 23 and transmits the information of the light-emitting units 12 that need to be transferred to the transfer device 33. The transfer device 33 performs a transfer operation on the light-emitting units 12 that need to be transferred. In this application, the processor 32 identifies the color development results of all colorimetric blocks 23 acquired by the image acquisition device 31, thereby determining the position of the corresponding light-emitting unit 12, ensuring that the transfer device 33 can quickly and accurately transfer the light-emitting unit 12, thus improving the transfer efficiency.

[0053] Optionally, a light-shielding layer 24 is provided between adjacent colorimetric blocks 23. By providing a light-shielding layer 24 between adjacent colorimetric blocks 23, the light emitted by adjacent light-emitting units 12 can be prevented from affecting the color development results of the colorimetric blocks 23, that is, the color development results of adjacent colorimetric blocks 23 are prevented from interfering with each other, thereby ensuring the accuracy of the color development results of the colorimetric blocks 23. The light-shielding layer 24 can be a light-absorbing strip or a light-absorbing plate, etc.

[0054] Please see Figure 4 , Figure 4 yes Figure 1 A flowchart of step S4 is provided; in the sorting method of the light-emitting units 12, a sorting component 30 is provided, and the steps of sorting multiple light-emitting units 12 based on the color rendering results of multiple colorimetric blocks 23 corresponding to multiple light-emitting units 12 include:

[0055] S41: Obtain the color rendering results of all color blocks 23.

[0056] Light emitted by the light-emitting unit 12 passes through the transparent first substrate 11 and illuminates the corresponding colorimetric block 23 in the colorimetric assembly 20. Multiple colorimetric blocks 23 display different colors based on the different optical parameters of the light emitted by the multiple light-emitting units 12. The image acquisition device 31 acquires the color rendering results of all colorimetric blocks 23. The colors displayed by the colorimetric blocks 23 have color parameters, including hue value, lightness, and saturation. This application mainly groups the light-emitting units 12 corresponding to the colorimetric blocks 23 based on the hue value of the colors displayed by the colorimetric blocks 23. Hue is the primary characteristic of color and the most accurate standard for distinguishing different colors. The difference between hues is determined by the wavelength of light. Different colorimetric blocks 23 receive light emitted by different light-emitting units 12, resulting in significant differences in the hue of the colors displayed by different colorimetric blocks 23; that is, different colorimetric blocks 23 display different hue values. Therefore, by using the hue value corresponding to the colors displayed by the colorimetric blocks 23, the light-emitting units 12 corresponding to colorimetric blocks 23 with similar color rendering results can be grouped together.

[0057] The color rendering result of the aforementioned colorimetric block is related to the optical parameters of the light emitted by the corresponding light-emitting unit 12. That is, the optical parameters of the light emitted by the light-emitting unit 12 can be calculated from the color rendering result of the colorimetric block 23. These optical parameters include wavelength, etc. At the same time, the color of the colorimetric block 23 of the colorimetric layer 22 can undergo reversible changes.

[0058] S42: Based on the color rendering results of each colorimetric block 23, the multiple light-emitting units 12 are grouped.

[0059] In one embodiment, the difference in color parameters corresponding to the color rendering results of any two light-emitting units 12 in the same group corresponding to colorimetric blocks 23 is less than or equal to a first threshold, so as to group the light-emitting units 12 corresponding to colorimetric blocks 23 with consistent color rendering results into a group.

[0060] In one embodiment, the difference in optical parameters of the light emitted by any two light-emitting units 12 in the same group is less than or equal to a second threshold, so as to group the light-emitting units 12 corresponding to the colorimetric blocks 23 with consistent color rendering results into a group.

[0061] The image acquisition device 31 can acquire image information of the color rendering results of each colorimetric block 23 by means of shooting, and transmit the image information of the color rendering results of each colorimetric block 23 to the processor 32. Specifically, the processor 32 compares and analyzes the color rendering results of each colorimetric block 23 based on the image information of the color rendering results, groups the light-emitting units corresponding to the colorimetric blocks whose color parameter difference is less than or equal to a first threshold, and transmits the information of the light-emitting units 12 in the same group to the transfer device 33. Specifically, the processor 32 selects the light-emitting units 12 corresponding to the colorimetric blocks 23 whose color parameter difference is less than or equal to the first threshold based on the image information of the color rendering results acquired by the image acquisition device 31.

[0062] In one embodiment, the processor can deduce the optical parameters of the light emitted by the light-emitting unit 12 corresponding to the colorimetric block 23 based on the color rendering result of the colorimetric block 23, thereby calculating the difference in the optical parameters of the light emitted by any two light-emitting units 12, and grouping the light-emitting units 12 whose optical parameter difference is less than or equal to the second threshold.

[0063] S43: Transfer all light-emitting units 12 in the same group to the same substrate.

[0064] The processor 32 transmits the information of the light-emitting unit 12 that needs to be transferred to the transfer device 33, and the transfer device 33 performs the transfer operation on the corresponding light-emitting unit 12 that needs to be transferred.

[0065] Please see Figure 5 , Figure 5 yes Figure 4 A flowchart illustrating an embodiment of step S42; wherein the step of grouping multiple light-emitting units 12 based on the color development results of each colorimetric block 23 includes:

[0066] S421: Randomly select two colorimetric blocks 23 and calculate the difference in color parameters to obtain the corresponding difference in color parameters.

[0067] Specifically, the processor 32 compares the color parameters corresponding to the color rendering results of the colorimetric blocks 23 pairwise and calculates the differences to obtain the differences in the color parameters corresponding to all color rendering results. In one embodiment, by obtaining the differences in the color parameters corresponding to all color rendering results, the median or mode of the color parameters can be determined.

[0068] S422: Group the light-emitting units 12 corresponding to any two colorimetric blocks 23 whose color parameter difference is less than or equal to the first threshold into a group.

[0069] Specifically, the differences in color parameters corresponding to all color rendering results are compared with preset thresholds. The light-emitting units corresponding to two colorimetric blocks 23 whose color parameter differences are less than or equal to the preset thresholds are grouped together. In this application, multiple preset thresholds are selected. After comparing the differences in color parameters corresponding to all color rendering results with each preset threshold, the light-emitting units 12 corresponding to all colorimetric blocks 23 are divided into multiple groups. In one embodiment, the light-emitting units 12 corresponding to colorimetric blocks 23 can also be grouped using the median of color parameters. When grouping the light-emitting units 12 corresponding to colorimetric blocks 23 using the median of color parameters, all the light-emitting units 12 corresponding to colorimetric blocks 23 can be divided into two groups. The differences in color parameters corresponding to the color rendering results of the light-emitting units 12 in the same group are relatively small, which can meet the needs of subsequent applications. Grouping the corresponding light-emitting units 12 by grouping the color parameters corresponding to the color rendering results of the colorimetric blocks 23 completes the grouping of the corresponding light-emitting units 12.

[0070] In step S42, the optical parameters of the light emitted by the corresponding light-emitting unit 12 can be deduced from the color development result of colorimetric block 23. This allows for the calculation of the difference in optical parameters between any two light-emitting units 12, and grouping light-emitting units 12 whose optical parameter differences are less than or equal to a second threshold. This also applies to steps S421 and S422, simply by replacing "color parameters" in steps S421 and S422 with "optical parameters of the light emitted by the light-emitting unit 12." Further details are omitted here.

[0071] Please see Figure 6 , Figure 6 yes Figure 4 A flowchart illustrating another embodiment of step S42; wherein the step of grouping the multiple light-emitting units 12 based on the color development results of each colorimetric block 23 includes:

[0072] S421': Statistically analyze the color parameters corresponding to the color rendering results of all color matching blocks 23, and determine the value range based on the values ​​of the color parameters corresponding to the color rendering results of all color matching blocks 23.

[0073] The color parameters corresponding to the color rendering results of all color matching blocks 23 are statistically analyzed. The numerical range of the color parameters corresponding to the color rendering results of all color matching blocks 23 can be determined through the statistical results.

[0074] S422': Divide the numerical range into multiple sub-numerical ranges, and group the light-emitting units 12 corresponding to multiple colorimetric blocks 23 whose color parameter values ​​are located in the same sub-numerical range.

[0075] Based on the statistically derived numerical range, the color parameters corresponding to the color rendering result of colorimetric block 23 are determined. The total numerical range can be divided into several sub-numerical ranges. Simultaneously, light-emitting units 12 corresponding to colorimetric blocks 23 that do not meet the usage requirements can be screened and removed in subsequent operations, thus eliminating defective light-emitting units 12. The several sub-numerical ranges are distributed in an arithmetic progression. Multiple light-emitting units 12 corresponding to colorimetric blocks 23 whose color parameter values ​​fall within the same sub-numerical range are grouped together.

[0076] In step S42, the optical parameters of the light emitted by the light-emitting unit 12 corresponding to colorimetric block 23 can be deduced from the color development result of colorimetric block 23. The optical parameters of the light emitted by the light-emitting unit 12 corresponding to all colorimetric blocks 23 also apply to steps S421' and S422' above; simply replace "color parameters" in steps S421' and S422' with "optical parameters of the light emitted by the light-emitting unit 12". Further details are omitted here.

[0077] In step S43, the step of transferring all light-emitting units 12 in the same group to the same substrate includes:

[0078] All light-emitting units 12 in the same group can be transferred to the same substrate by laser transfer, or by stamp transfer.

[0079] The transfer device 33, according to the instructions of the processor 32, can transfer the light-emitting unit 12 by laser transfer or stamp transfer. In one embodiment, the processor 32 can determine the position information of all light-emitting units 12 based on the color development results of the colorimetric blocks 23 corresponding to all light-emitting units 12 in the same group, and issue instructions to the transfer device 33 to transfer the light-emitting units 12 in the same group. For example, the processor 32 obtains the position information of all light-emitting units 12 in the same group, and issues instructions to the transfer device 33 based on the position information. After receiving the instructions, the transfer device 33 transfers all light-emitting units 12 in the same group to the same substrate.

[0080] In one embodiment, the processor 32 obtains the target color information of the color development result of the colorimetric block 23. Based on the target color information, the transfer device 33 transfers the light-emitting units 12 in the same group corresponding to the target color information to the same substrate. In this embodiment, the transfer device 33 transfers the light-emitting units 12 according to the target color information of the colorimetric block 23 corresponding to the light-emitting units 12, without needing to calculate the position information of the light-emitting units 12 in the same group, thus improving the transfer efficiency.

[0081] In one embodiment, the processor obtains the position information of the corresponding light-emitting unit 12 based on the color parameters corresponding to the color rendering results of the grouped colorimetric blocks 23. The processor 32 records the position information of the light-emitting units 12 corresponding to all colorimetric blocks 23 in each group. Since the positions of the colorimetric blocks 23 and the light-emitting units 12 correspond, the position information of the light-emitting units 12 in the same group is determined by the position information of the colorimetric blocks 23 in the same group. The transfer device 33 transfers the light-emitting units 12 in the same group to the same substrate or driving backplate according to the received position information of the light-emitting units 12 in the same group, thereby ensuring the display uniformity of the display screen.

[0082] The light-emitting unit sorting system provided in this application can apply the light-emitting unit sorting method provided in any of the above embodiments. A light-emitting unit sorting system includes a colorimetric component 20 and a sorting component 30; wherein, the colorimetric component 20 includes a colorimetric layer 22, the colorimetric layer 22 includes a plurality of colorimetric blocks 23, the plurality of colorimetric blocks 23 are arranged opposite to a plurality of light-emitting units 12, the plurality of colorimetric blocks 23 absorb the light emitted by the light-emitting unit 12 at the corresponding position and perform color rendering to obtain the corresponding color rendering result; the sorting component 30 is used to sort the plurality of light-emitting units 12 based on the color rendering results of the plurality of colorimetric blocks 23 corresponding to the plurality of light-emitting units.

[0083] The light-emitting unit 12 is disposed on one side of the first substrate 11 and emits light when powered on. The colorimetric component 20 is disposed opposite to the multiple light-emitting units 12 to absorb the light emitted by the light-emitting units 12 at corresponding positions and perform color development. Light with different optical parameters causes the colorimetric blocks 23 of the colorimetric component 20 to display different colors. The optical parameters of light include light intensity, wavelength, etc., and colors have color parameters, which are different for different colors. The colorimetric component 20 can develop colors according to the light emitted by the light-emitting units 12, thereby amplifying the differences in the light emitted by the light-emitting units 12, reducing the difficulty of identification, and thus improving the sorting accuracy of the light-emitting units 12.

[0084] Furthermore, the sorting component 30 is used to sort the multiple light-emitting units 12 based on the color development results of the multiple colorimetric blocks 23 corresponding to the multiple light-emitting units 12. The sorting component 30 includes a laser transfer device or a stamp transfer device. For example, when the light-emitting units 12 are disposed on a growth substrate or a temporary substrate, the light-emitting units 12 corresponding to the colorimetric blocks 23 whose color parameter difference corresponding to the color development result is less than or equal to a first threshold can be sorted and transferred to the same driving backplate by means of laser transfer or stamp transfer, thereby improving the uniformity of the display. For another example, when the light-emitting units 12 are located on the driving backplate, the light-emitting units 12 corresponding to the colorimetric blocks 23 whose color development results do not meet the preset conditions can also be removed from the driving backplate by means of laser transfer or stamp transfer.

[0085] In the above design, this application uses the light-emitting unit 12 to emit light and illuminate the colorimetric component 20, so that the multiple colorimetric blocks 23 of the colorimetric component 20 absorb the light emitted by different light-emitting units 12 to display different colors, thereby achieving the effect of improving the sorting accuracy of the light-emitting unit 121 through color difference.

[0086] Please continue reading. Figure 2 In one embodiment, the first substrate 11 is a transparent substrate, and the light-emitting units 12 are arranged in a regular pattern on the upper surface of the first substrate 11. The light emitted by the light-emitting units 12 can pass through the transparent first substrate 11 to illuminate the colorimetric component 20. The transparent first substrate 11 ensures that the light emitted by the light-emitting units 12 can illuminate the colorimetric component 20 below. The candidate light-emitting units 12 can be light-emitting units 12 with the same emitting color. The sorting component 30 is used to sort the qualified light-emitting units 12, transferring the light-emitting units 12 corresponding to the colorimetric blocks 23 whose color parameters meet the preset conditions according to the color development results to the same substrate. Alternatively, the candidate light-emitting units 12 can be light-emitting units 12 with different emitting colors. The sorting component 30 is used to group and select the light-emitting units 12, transferring the light-emitting units 12 corresponding to the colorimetric blocks 23 whose color parameters meet the preset conditions according to the color development results to the same substrate.

[0087] The light emitted by the light-emitting unit 12 passes through the transparent first substrate 11 and illuminates the colorimetric component 20, thereby enabling the colorimetric component 20 to perform color development. The colorimetric component 20 improves the color development difference of the light emitted by the light-emitting unit 12, reducing the difficulty of color recognition.

[0088] In another embodiment, the light-emitting units 12 are arranged in a regular pattern on the lower surface of the first substrate 11. In this case, the light-emitting units 12 are closer to the colorimetric component 20 relative to the first substrate 11. The light-emitting units 12 emit light so that the light emitted by the light-emitting units 12 can directly illuminate the colorimetric component 20 below, thereby enabling the colorimetric component 20 to perform color development. The colorimetric component 20 improves the color development difference of the light emitted by the light-emitting units 12 and reduces the difficulty of color recognition.

[0089] The colorimetric component 20 includes a second substrate 21 and a colorimetric layer 22 located on one side of the second substrate 21; preferably, the second substrate 21 is a transparent substrate. Preferably, the colorimetric layer 22 is closer to the light-emitting unit 12 relative to the second substrate 21. The colorimetric layer 22, stacked on the second substrate 21, can absorb the light emitted by the light-emitting unit 12, thereby enabling color rendering. This amplifies the color differences of the light emitted by the light-emitting unit 12, reduces the difficulty of color identification, and improves the accuracy of sorting by the light-emitting unit 12.

[0090] Optionally, the second substrate 21 is a transparent substrate. In one embodiment, the image acquisition device 31 is directly disposed below the second substrate 21. Since the second substrate 21 is a transparent substrate, the color development result of the colorimetric layer 22 can be directly identified by the image acquisition device 31. In another embodiment, the second substrate 21 is a white substrate, and the image acquisition device 31 is disposed diagonally above the colorimetric layer 22. The white substrate can provide a background color, making the color development result of the colorimetric layer 22 easier to distinguish. The material of the second substrate 21 can be one or more of glass, sapphire, and quartz glass.

[0091] Optionally, the colorimetric layer 22 is positioned closer to the light-emitting unit 12 relative to the second substrate 21. In one embodiment, the colorimetric layer 22 can be disposed on the upper surface of the second substrate 21, allowing the colorimetric layer 22 to directly receive the light emitted by the light-emitting unit 12, avoiding interference and making the color development of the colorimetric layer 22 faster and more accurate. In another embodiment, the colorimetric layer 22 can be disposed on the lower surface of the transparent second substrate 21, and an image acquisition device 31 for acquiring color development results can be disposed below the colorimetric layer 22, thereby directly acquiring the color development results of the colorimetric layer 22 and ensuring more accurate color recognition.

[0092] Furthermore, the colorimetric layer 22 includes multiple colorimetric blocks 23, each containing a photosensitive material; furthermore, each colorimetric block 23 includes a photochromic material, which includes at least one of spiropyran functional groups and azobenzene functional groups. Simultaneously, the color of the colorimetric layer 22 can undergo reversible changes. Optionally, the molecular structure of the photochromic material in the colorimetric layer 22 includes at least one of spiropyran functional groups and azobenzene functional groups. Both spiropyran and azobenzene functional groups are components of photochromic materials and are relatively easy to obtain. When the photochromic material is irradiated with light of different wavelengths, it will display different colors. In practical use, one of the spiropyran or azobenzene functional groups, or both, can be selected according to specific sorting requirements.

[0093] Meanwhile, the color displayed by the colorimetric layer 22 can undergo reversible changes. When light emitted by the light-emitting unit 12 shines on the colorimetric layer 22, the colorimetric layer 22 can undergo a certain degree of color change and remain so for a certain period of time before slowly returning to its initial color. Alternatively, when the colorimetric layer 22 is irradiated by light of another fixed wavelength or heated, it can return to its initial color, which helps to reduce the color recovery time of the colorimetric layer 22 and ensures the sorting efficiency of the light-emitting unit 12.

[0094] In addition, the colorimetric layer 22 includes a plurality of colorimetric blocks 23 spaced apart, with each colorimetric block 23 corresponding to one light-emitting unit 12. In one example, the plurality of colorimetric blocks 23 are matched one-to-one with the plurality of light-emitting units 12, so that the light emitted by a single light-emitting unit 12 illuminates the corresponding colorimetric block 23. The processor 32 identifies the color rendering results of all colorimetric blocks 23, thereby determining the position information of the corresponding light-emitting unit 12, ensuring that the transfer device 33 can quickly and accurately transfer the light-emitting unit 12, thus improving the transfer efficiency.

[0095] Please continue reading. Figure 3 In the sorting system of the light-emitting unit 12, a light-shielding layer 24 is provided between adjacent colorimetric blocks 23. In one embodiment, by providing a light-shielding layer 24 between adjacent colorimetric blocks 23, the light emitted by adjacent light-emitting units 12 can be prevented from affecting the color development of the colorimetric blocks 23, thus ensuring the accuracy of the color development results. The light-shielding layer 24 can be a light-absorbing strip or a light-absorbing plate, etc., selected according to the actual situation.

[0096] Please see Figure 7 , Figure 7This is a schematic diagram of the sorting component 30 of this application. The sorting component 30 includes an image acquisition device 31, a processor 32, and a transfer device 33. The image acquisition device 31 is used to acquire image information of the color development result of the colorimetric component 20. Depending on the actual situation, when the second substrate 21 is a transparent material, the image acquisition device 31 can be positioned below the second substrate 21 to facilitate the acquisition of the image of the color development result of the colorimetric layer 22 located on the upper surface of the second substrate 21. Alternatively, when the second substrate 21 is a white material, the image acquisition device 31 is positioned diagonally above the colorimetric layer 22 to acquire the image of the color development result.

[0097] The processor 32, coupled to the image acquisition device 31, is used to obtain the color parameters corresponding to the color development results of each colorimetric block 23 corresponding to each light-emitting unit 12 based on the image of the color development results, and to generate corresponding transfer instructions based on the color parameters. The processor 32 can obtain the color parameters corresponding to the color development results of each colorimetric block 23 in the colorimetric layer 22 based on the image of the color development results acquired by the image acquisition device 31, calculate the difference between the color parameters corresponding to the color development results of each colorimetric block 23, group the colorimetric blocks 23 whose color parameter differences are less than or equal to a first threshold, and then obtain the grouping of the light-emitting units 12 corresponding to the colorimetric blocks 23, so that the color of the light emitted by the light-emitting units 12 in the same group remains consistent, thereby improving the uniformity of the display. The processor 32 calculates and obtains the coordinate positions of the colorimetric blocks 23 in the same group. Since the colorimetric blocks 23 correspond to the light-emitting units 12, the coordinate positions of the light-emitting units 12 in the same group can be obtained, and transfer instructions are generated based on the coordinate positions of the light-emitting units 12 in the same group.

[0098] The transfer device 33 is used to transfer at least a portion of the plurality of light-emitting units 12 based on transfer instructions. Since the transfer instructions of the processor 32 include the coordinate positions of the light-emitting units 12 in the same group, the transfer device 33 can be a laser transfer device or a stamp transfer device to transfer the light-emitting units 12 in the same group to the same driving backplate or substrate according to the coordinate positions, so that the light-emitting units 12 in the same group are integrated in the same driving backplate or substrate, thereby improving the display uniformity of the display device.

[0099] The sorting method and system for light-emitting units 12 provided in this application involve setting one light-emitting unit 12 corresponding to at least one colorimetric block 23; causing multiple light-emitting units 12 to emit light, and after the light emitted by the multiple light-emitting units 12 illuminates the colorimetric blocks 23 at corresponding positions, the colorimetric blocks 23 perform color rendering to obtain the corresponding color rendering result; simultaneously, a sorting component 30 is provided to sort the multiple light-emitting units 12 based on the color rendering results of the multiple colorimetric blocks 23 corresponding to the multiple light-emitting units. This design achieves the effect of improving the sorting accuracy of the light-emitting units 12 by utilizing the color rendering differences of the colorimetric blocks 23, while also featuring high sorting efficiency and low cost. Integrating the sorted light-emitting units 12, i.e., those with nearly uniform emitting colors, improves the display uniformity of the display product, thereby ensuring the display effect.

[0100] The above description is merely an embodiment of this application and does not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A method for sorting light-emitting units, characterized in that, The sorting method includes: A colorimetric component is provided, the colorimetric component including a colorimetric layer, the colorimetric layer including a plurality of colorimetric blocks; Multiple light-emitting units are provided, and the multiple light-emitting units are arranged opposite to the colorimetric component, with one light-emitting unit corresponding to one colorimetric block; The multiple light-emitting units are made to emit light, and the light emitted by the multiple light-emitting units illuminates the colorimetric block at the corresponding position. The colorimetric block then develops the color to obtain the corresponding color development result. A sorting component is provided to sort the multiple light-emitting units based on the color rendering results of the multiple colorimetric blocks corresponding to the multiple light-emitting units; The step of providing a sorting component to sort multiple light-emitting units based on the color development results of multiple colorimetric blocks corresponding to multiple light-emitting units includes: Obtain the color development results for all the colorimetric blocks; The multiple light-emitting units are grouped based on the color rendering results of each of the colorimetric blocks; All the light-emitting units in the same group are transferred to the same substrate.

2. The sorting method according to claim 1, characterized in that, A light-shielding layer is provided between adjacent colorimetric blocks.

3. The sorting method according to claim 1, characterized in that, The step of grouping the multiple light-emitting units based on the color development results of each of the colorimetric blocks includes: The color parameters of any two colorimetric blocks are selected and the difference between their color development results is calculated to obtain the corresponding difference between the color parameters. The light-emitting units corresponding to any two colorimetric blocks that satisfy the color parameter difference being less than or equal to a first threshold are grouped together.

4. The sorting method according to claim 1, characterized in that, The step of grouping the multiple light-emitting units based on the color development results of each of the colorimetric blocks includes: The difference between the optical parameters of the light emitted by the corresponding light-emitting unit is calculated by arbitrarily selecting the color development results of two colorimetric blocks and obtaining the difference between the corresponding optical parameters. Any two light-emitting units whose difference in optical parameters is less than or equal to the second threshold are grouped together.

5. The sorting method according to claim 1, characterized in that, The step of grouping the multiple light-emitting units based on the color development results of each of the colorimetric blocks includes: The color parameters corresponding to the color development results of all the colorimetric blocks are statistically analyzed, and the value range is determined based on the values ​​of the color parameters corresponding to the color development results of all the colorimetric blocks. The numerical range is divided into multiple sub-numerical ranges, and the light-emitting units corresponding to multiple colorimetric blocks whose color parameter values ​​are located within the same sub-numerical range are grouped together.

6. The sorting method according to claim 1, characterized in that, The step of grouping the multiple light-emitting units based on the color development results of each of the colorimetric blocks includes: The optical parameters of the light emitted by the corresponding light-emitting unit are calculated based on the color development results of all the colorimetric blocks. The optical parameters of the light emitted by the light-emitting units corresponding to all the colorimetric blocks are statistically analyzed, and the numerical range is determined based on the values ​​of the optical parameters of the light emitted by the light-emitting units corresponding to all the colorimetric blocks. The numerical range is divided into multiple sub-numerical ranges, and multiple light-emitting units whose optical parameter values ​​are located within the same sub-numerical range are grouped together.

7. The sorting method according to claim 1, characterized in that, The step of transferring all the light-emitting units in the same group to the same substrate includes: All the light-emitting units in the same group are transferred to the same substrate by laser transfer; or... All the light-emitting units in the same group are transferred to the same substrate by means of stamp transfer.

8. A sorting system for light-emitting units, characterized in that, The sorting system includes: A colorimetric component, comprising a colorimetric layer, the colorimetric layer comprising a plurality of colorimetric blocks, the plurality of colorimetric blocks being arranged opposite to a plurality of light-emitting units, the plurality of colorimetric blocks absorbing light emitted by the light-emitting units at corresponding positions and performing color rendering to obtain a corresponding color rendering result; A sorting component is used to sort multiple light-emitting units based on the color rendering results of multiple colorimetric blocks corresponding to multiple light-emitting units.

9. The sorting system as described in claim 8, characterized in that, The colorimetric assembly also includes a second substrate, with the colorimetric layer located on one side of the second substrate.

10. The sorting system as described in claim 9, characterized in that, The second substrate is a transparent substrate.

11. The sorting system as described in claim 9, characterized in that, The colorimetric blocks include photosensitive materials.

12. The sorting system as described in claim 11, characterized in that, The colorimetric block includes a photochromic material, which includes at least one of spiropyran functional groups and azobenzene functional groups.

13. The sorting system as described in claim 11, characterized in that, A light-shielding layer is provided between adjacent colorimetric blocks.

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