Display panel

Abstract

The application provides a display panel. The display panel comprises a first substrate, a second substrate and a quantum dot layer. The first substrate comprises a driving circuit layer and a plurality of arrayed LED chips. The plurality of LED chips are arranged on the driving circuit layer and are electrically connected with the driving circuit in the driving circuit layer; the quantum dot layer is arranged on the first substrate and covers the plurality of LED chips; the second substrate is arranged opposite to the first substrate and comprises a color filter layer; the color filter layer is arranged on the side of the quantum dot layer away from the LED chips; the orthographic projection of the color filter layer on the first substrate covers the plurality of LED chips; and the quantum dot layer emits white light under the excitation of the light emitted by the LED chips. The quantum dot layer of the application does not need to be divided into regions and colors and is only needed to be ink-jetted once, which is beneficial to reducing the forming process of the quantum dot layer and improving the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a display panel. BACKGROUND

[0002] A conventional Mini / Micro-LED display panel adopts QD color conversion technology to realize full-color display by using blue Mini / Micro-LED in combination with red and green QD. However, the QD color conversion technology needs to use a multiple inkjet printing process, which results in a large number of forming processes of the quantum dot layer and affects the production efficiency of the product. SUMMARY

[0003] Therefore, the present application provides a display panel to solve the problem that the QD color conversion technology uses a multiple inkjet printing process and affects the production efficiency of the product.

[0004] The technical scheme adopted by the present application to solve the above technical problem is as follows:

[0005] An embodiment of the present application provides a display panel, comprising:

[0006] A first substrate comprising a driving circuit layer and a plurality of arrayed LED chips, the LED chips being arranged on the driving circuit layer, and each of the LED chips being electrically connected to a driving circuit in the driving circuit layer;

[0007] A quantum dot layer arranged on the first substrate and covering the plurality of LED chips;

[0008] A second substrate oppositely arranged with the first substrate and comprising a color film layer, the color film layer being arranged on a side of the quantum dot layer away from the LED chips, a normal projection of the color film layer on the first substrate covering the plurality of LED chips, and the quantum dot layer emitting white light under excitation of light emitted by the LED chips.

[0009] In some embodiments of the present application, the quantum dot layer comprises arrayed color conversion units, the color conversion units are arranged in one-to-one correspondence with the LED chips, a plurality of first quantum dots and a plurality of second quantum dots are arranged in the color conversion units, and the color of the first quantum dots is different from the color of the second quantum dots.

[0010] In some embodiments of the present application, the color conversion unit comprises a transparent adhesive layer, the first quantum dots and the second quantum dots are filled in the transparent adhesive layer, the quantity ratio of the first quantum dots and the second quantum dots ranges from 0.7 to 1.4, and the total mass percentage of the first quantum dots and the second quantum dots in the transparent adhesive layer ranges from 20% to 50%.

[0011] In some embodiments of the present application, the quantity ratio of the first quantum dots and the second quantum dots is 1:1, and the total mass percentage of the first quantum dots and the second quantum dots in the transparent adhesive layer is 40%.

[0012] In some embodiments of the present application, the color film layer comprises arrayed blue color resist, red color resist and green color resist, the blue color resist is arranged opposite to the color conversion unit, the green color resist is arranged opposite to the color conversion unit, the red color resist is arranged opposite to the color conversion unit, and the color of the color resist opposite to the adjacent two color conversion units is different.

[0013] In some embodiments of the present application, the first substrate further comprises a first substrate and a first transparent encapsulation layer, the driving circuit layer is arranged on the first substrate, a plurality of LED chips are arranged on the side of the driving circuit layer away from the first substrate, and the first transparent encapsulation layer covers the plurality of LED chips.

[0014] In some embodiments of the present application, the display panel comprises arrayed barrier walls, the barrier walls are arranged on the first substrate and surrounded by the first transparent encapsulation layer, the height of the side of the barrier wall away from the first substrate is not less than the height of the color film layer, one color conversion unit is arranged between adjacent two barrier walls, and the barrier wall is opaque.

[0015] In some embodiments of the present application, the display panel further comprises a second transparent encapsulation layer, the second transparent encapsulation layer is arranged between the quantum dot layer and the color film layer, or the second transparent encapsulation layer is arranged on the side of the color film layer away from the quantum dot layer.

[0016] In some embodiments of the present application, the display panel comprises arrayed barrier walls, the barrier walls are arranged between the first transparent encapsulation layer and the second transparent encapsulation layer, one color conversion unit is arranged between adjacent two barrier walls, and the barrier wall is opaque.

[0017] In some embodiments of the present application, the color film layer is arranged on the side of the second transparent encapsulation layer away from the LED chip, the color film layer comprises arrayed color resist, the display panel comprises arrayed black matrix, and one color resist is arranged between adjacent two black matrixes.

[0018] In some embodiments of the present application, the color of the first quantum dots is one of red and green, the color of the second quantum dots is one of red and green, and the color of the light emitted by the LED chip is blue.

[0019] In summary, due to the adoption of the technical solutions described above, the present application at least includes the following beneficial effects:

[0020] The embodiments of the present application provide a display panel, which utilizes the cooperation of the LED chip and the quantum dot layer to convert the light emitted by the LED chip into white light, and the white light passes through the color film layer to emit light of the same color as the color film layer, complete the display of different color pictures, and because the quantum dot layer does not need to be patterned by multiple colors and regions as in the related art, but only needs to be patterned once, i.e. only one kind of ink is used, which is conducive to simplifying the manufacturing process of the quantum dot layer and improving the production efficiency, and because only one kind of ink is needed, the resolution of the display panel is also relieved from the restriction of the inkjet printing process when the inkjet printing process is applied to prepare the quantum dot layer. In detail, first, a plurality of LED chips are arranged in an array and electrically connected with the driving circuit layer, so that the LED chips can emit light; then, by setting the quantum dot layer covering the plurality of LED chips and the color film layer covering the plurality of LED chips, the quantum dot layer can emit white light under the excitation of the light emitted by the LED chip, so that all the light emitted by the LED chips will be converted into white light after passing through the quantum dot layer, and the white light will pass through the color film layer to realize the display of the picture of the target color. Moreover, because the light passing through the quantum dot layer will be converted into white light, the quantum dot layer does not need to be inkjet printed with multiple inks during the process, but only needs to be inkjet printed once to complete the patterning of the quantum dot layer, which is conducive to reducing the process procedure and the number of exposures, and also relieves the resolution of the display panel from the restriction of the inkjet printing process when the inkjet printing process is applied to prepare the quantum dot layer. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structural schematic diagram of a display panel provided by an embodiment of the present application;

[0022] Figure 2 A structural schematic diagram of another display panel provided by an embodiment of the present application;

[0023] Figure 3 A structural schematic diagram of another display panel provided by an embodiment of the present application.

[0024] REFERENCE SIGNS:

[0025] 100, display panel; 110, first substrate; 111, driving circuit layer; 112, LED chip layer; 1121, LED chip; 113, first transparent encapsulation layer; 114, first substrate; 120, second substrate; 121, second substrate; 122, second transparent encapsulation layer; 123, color filter layer; 1231, color resistance; 1232, black matrix; 124, quantum dot layer; 1241, first quantum dot; 1242, second quantum dot; 1243, color conversion unit; 125, barrier wall. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application.

[0027] In the description of the present application, it should be understood that the words "first", "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0028] At the same time, specific words are used in the present application to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" means that a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that the "an embodiment" or "one embodiment" or "one alternative embodiment" mentioned in different places in the specification does not necessarily refer to the same embodiment. In addition, some features, structures or characteristics in one or more embodiments of the present application can be properly combined.

[0029] Please refer to Figures 1 to 3 The embodiments of the present application provide a display panel 100, comprising a first substrate 110, a second substrate 120 and a quantum dot layer 124.

[0030] The first substrate 110 comprises a driving circuit layer 111 and an LED chip layer 112. The LED chip layer 112 is arranged on the driving circuit layer 111 and comprises a plurality of arrayed LED chips 1121. The plurality of LED chips 1121 are electrically connected to the driving circuit in the driving circuit layer 111.

[0031] The quantum dot layer 124 is arranged on the first substrate 110 and covers the plurality of LED chips 1121.

[0032] The second substrate 120 is arranged opposite to the first substrate 110 and comprises a color filter layer 123. The color filter layer 123 is arranged on a side of the quantum dot layer 124 away from the LED chips 1121, and a normal projection of the color filter layer 123 on the first substrate 110 covers the plurality of LED chips 1121. The quantum dot layer 124 emits white light under excitation of light emitted by the LED chips 1121.

[0033] It should be noted that the quantum dot layer 124 covering the plurality of LED chips 1121 means that a projection of the quantum dot layer 124 in a direction towards the LED chip layer 112 covers the plurality of LED chips 1121. Similarly, the color filter layer 123 covering the plurality of LED chips 1121 means that a projection of the color filter layer 123 in a direction towards the LED chip layer 112 covers the plurality of LED chips 1121.

[0034] The technical solution provided in the present application utilizes the cooperation of the LED chips 1121 and the quantum dot layer 124 to convert the light emitted by the LED chips 1121 into white light, and the white light passes through the color filter layer 123 to emit light of the same color as the color filter layer 123, thereby completing the display of a picture of different colors. In addition, the quantum dot layer 124 does not need to be patterned by multiple colors and regions as in the related art, but only needs to be patterned once, i.e., only one type of ink is used, thereby eliminating the restriction of the inkjet printing process on the resolution of the display panel 100 and improving the resolution of the display panel 100 when the inkjet printing process is applied to prepare the quantum dot layer 124. In detail, first, the plurality of LED chips 1121 are arranged in an array and electrically connected to the driving circuit layer 111, so that the LED chips 1121 can emit light. Then, the quantum dot layer 124 covering the plurality of LED chips 1121 and the color filter layer 123 covering the plurality of LED chips 1121 are arranged. The quantum dot layer 124 can emit white light under excitation of light emitted by the LED chips 1121, so that all the light emitted by the LED chips 1121 is converted into white light after passing through the quantum dot layer 124. The white light passes through the color filter layer 123 to filter the color of the light, thereby realizing the display of a picture of a target color. In addition, because the light passing through the quantum dot layer 124 is converted into white light, the quantum dot layer 124 does not need to be printed by multiple inks during the process, but only needs to be printed once to complete the patterning of the quantum dot layer 124, which is beneficial to reducing the process procedures and the number of exposures and eliminating the restriction of the inkjet printing process on the resolution of the display panel 100, thereby improving the resolution of the display panel 100 when the inkjet printing process is applied to prepare the quantum dot layer 124.

[0035] In the embodiments of the present application, please refer to Figure 1 or Figure 2 or Figure 3The quantum dot layer 124 is provided with a plurality of first quantum dots 1241 and a plurality of second quantum dots 1242. The color of the first quantum dots 1241 is one of red and green, the color of the second quantum dots 1242 is one of red and green, and the color of the light emitted by the LED chip 1121 is blue. By using the characteristic that the wavelength of blue light is longer than that of red and green light, the blue light excites the red quantum dots to emit red light and the green quantum dots to emit green light. Moreover, the color of the first quantum dots 1241 and the color of the second quantum dots 1242 are different, that is, the color of the first quantum dots 1241, the color of the second quantum dots 1242, and the color of the light emitted by the LED chip 1121 together constitute three primary colors, that is, when the three colors are combined, the color of the light can be converted into white light. By making the color of the first quantum dots 1241, the color of the second quantum dots 1242, and the color of the light emitted by the LED chip 1121 be one of three primary colors that are different from each other, it is ensured that the light emitted by the LED chip 1121 can be converted into white light after being excited by the first quantum dots 1241 and the second quantum dots 1242, and the white light is combined with the color film layer 123, so that the light of the color corresponding to the color film layer 123 can be emitted after passing through the color film layer 123. In this embodiment, the quantum dot layer 124 is a whole layer structure containing the first quantum dots 1241 and the second quantum dots 1242, and does not need to be printed by inkjet printing in different regions and colors, but only needs to be printed by inkjet printing once, which is beneficial to reduce the process, improve the production efficiency, and also does not need to be limited by the resolution of multiple inkjet printing.

[0036] Further, the color of the light emitted by the LED chip 1121 is blue, the color of the first quantum dots 1241 is red, and the color of the second quantum dots 1242 is green. The LED chip 1121 emits blue light, the blue light enters the quantum dot layer 124, excites the first quantum dots 1241 and the second quantum dots 1242, and the first quantum dots 1241, the second quantum dots 1242, and the blue light together form three primary colors and combine to convert the light into white light.

[0037] It should be noted that the first quantum dots 1241 and the second quantum dots 1242 are both multi-exciton emission materials.

[0038] In some embodiments, the quantum dot layer 124 includes a plurality of color conversion units 1243 arranged in an array, and each color conversion unit 1243 includes a plurality of first quantum dots 1241 and a plurality of second quantum dots 1242. The color conversion units 1243 are arranged in one-to-one correspondence with the LED chips 1121, so that the light emitted by each LED chip 1121 can enter the corresponding color conversion unit 1243 as much as possible, avoiding interference when the arrayed LED chips 1121 emit light and when the first quantum dots 1241 and the second quantum dots 1242 are excited, resulting in too chaotic light emission angle of the subsequent white light. In addition, the quantum dot layer 124 is divided into a plurality of color conversion units 1243 in one-to-one correspondence with the LED chips 1121, providing a positioning basis for the subsequent color film layer 123.

[0039] The color conversion unit includes a transparent adhesive layer. The first quantum dots 1241 and the second quantum dots 1242 are filled in the transparent adhesive layer, and the number ratio of the first quantum dots 1241 to the second quantum dots 1242 ranges from 0.7 to 1.4. For example, in some embodiments, the number of the first quantum dots 1241 is less than the number of the second quantum dots 1242, and the number ratio of the first quantum dots 1241 to the second quantum dots 1242 can be 0.7, 0.8, 0.9, 0.95, etc., without limitation. In some embodiments, the number of the first quantum dots 1241 can also be greater than the number of the second quantum dots 1242, and the number ratio of the first quantum dots 1241 to the second quantum dots 1242 can be 1.1, 1.2, 1.3, 1.4, etc., without limitation. In some embodiments, the number of the first quantum dots 1241 can also be equal to the number of the second quantum dots 1242, i.e., the number ratio of the first quantum dots 1241 to the second quantum dots 1242 is 1. The total mass ratio of the first quantum dots 1241 and the second quantum dots 1242 in the transparent adhesive layer ranges from 20% to 50%. For example, the total mass ratio of the first quantum dots 1241 and the second quantum dots 1242 in the transparent adhesive layer can be 20%, 30%, 40%, 50%, etc., without limitation. By limiting the ratio between the first quantum dots 1241 and the second quantum dots 1242, the number of the first quantum dots 1241 and the number of the second quantum dots 1242 are within a reasonable range, avoiding too large difference between the number of one type of quantum dots and the number of another type of quantum dots, which affects the multi-color display effect of the display panel.

[0040] Further, the quantity ratio of the first quantum dots 1241 and the second quantum dots 1242 is 1:1, that is, the quantity of the first quantum dots 1241 and the second quantum dots 1242 is the same or approximately the same, which is beneficial to the light quantity converted by the first quantum dots 1241 and the second quantum dots 1242 being more even. The total mass proportion of the first quantum dots 1241 and the second quantum dots 1242 in the transparent adhesive layer is 40%, that is, the sum of the mass of the first quantum dots 1241 and the mass of the second quantum dots 1242 accounts for 40% of the mass of the transparent adhesive layer, so that the first quantum dots 1241 and the second quantum dots 1242 can fill the transparent adhesive layer as much as possible, and the light conversion efficiency is improved.

[0041] In some embodiments, the color film layer 123 includes a plurality of color resist 1231 arranged in an array. The color resist 1231 is arranged in one-to-one correspondence with the color conversion unit 1243, so as to ensure that the light emitted by one LED chip 1121 can be converted into white light by the color conversion unit 1243, and the white light can be emitted into the corresponding color resist 1231 as much as possible. A part of the color resist 1231 is blue, a part of the color resist 1231 is red, and a part of the color resist 1231 is green. The plurality of color resist 1231 is divided into blue color resist 1231, red color resist 1231 and green color resist 1231, so that the white light can emit blue, red and green light after passing through the color film layer 123. The three colors are primary colors, that is, other colors of light can be obtained by combining the three colors of light, thereby meeting the requirement of the display panel 100 for displaying various pictures.

[0042] Further, every three colors of color resist 1231 form a color resist unit, and a plurality of color resist units are arranged in an array, so as to ensure that each color resist unit can emit light of the color required for picture display.

[0043] In some embodiments, the first substrate 110 further includes a first substrate 114 and a first transparent packaging layer 113. The first transparent packaging layer 113 and the LED chip layer 112 are arranged on the side of the first substrate 114 facing the second substrate 120, and the first transparent packaging layer 113 covers the LED chip layer 112. The first transparent packaging layer 113 can protect the driving circuit layer 111 and the LED chip layer 112 from water vapor erosion and affect the normal work of the driving circuit layer 111 and the LED chip layer 112.

[0044] Specifically, the first substrate 114 can be a rigid substrate or a flexible substrate, and can be an inorganic substrate or an organic substrate, which is not limited herein. The driving circuit layer 111 is arranged on the first substrate 114, and the driving circuit layer 111 includes a driving circuit for driving the LED chips 1121 on the LED chip layer 112 to emit light. The driving circuit can include thin film transistors, capacitors and other electronic components, and signal lines. The specific arrangement manner can refer to the arrangement manner of the driving circuit layer 111 known by those skilled in the art, which is not limited herein. A plurality of LED chips 1121 are arranged on the driving circuit layer 111 in sequence and adjacent to each other, and are electrically connected to the driving circuit below. The first transparent encapsulation layer 113 is arranged on the driving circuit layer 111 and fills the gap between adjacent LED chips 1121, for protecting the driving circuit and the LED chips 1121 from the influence of water vapor. Since the LED chips 1121 are chips of the same color, the first transparent encapsulation layer 113 can be a transparent layer and can completely cover the LED chips 1121 inside the encapsulation layer, which is better for encapsulation and will not cause the problem of light crosstalk between LED chips 1121 of different colors. In addition, the first transparent encapsulation layer 113 is an organic glue layer, which plays a planarization role, facilitating the subsequent arrangement of the quantum dot layer 124.

[0045] Further, referring to Figure 2 and Figure 3 , the second substrate 120 further includes a second transparent encapsulation layer 122, which is arranged on the side of the quantum dot layer 124 away from the LED chip layer 112 and covers the quantum dot layer 124. The second transparent encapsulation layer 122 can encapsulate and protect the quantum dot layer 124, and also has a planarization effect.

[0046] Further, the second substrate 120 further includes a second substrate 121, which is a transparent substrate to ensure the light output effect of the display panel 100. The second transparent encapsulation layer 122 is arranged on the side of the second substrate 121 facing the LED chip layer 112.

[0047] In some embodiments, the display panel includes an array of barrier walls 125. The barrier walls 125 are disposed on the first substrate 114 and surrounded by the first transparent encapsulation layer 113. The barrier walls 125 are not less than the height of the color filter layer 123 in height from the side of the LED chip layer 112. An adjacent two barrier walls 125 are provided with a color conversion unit 1243 and the barrier walls 125 are opaque. The barrier walls 125 can isolate adjacent color conversion units 1243 and support and block water vapor. The adjacent two color conversion units 1243 are isolated by the barrier walls 125, which is conducive to the alignment of light and color resistance 1231, avoids the subsequent chaotic emission of light, and the barrier walls 125 can also avoid the scattering of light from the quantum dot layer 124 at too large an angle, affecting the display effect. The height of the barrier walls 125 from the side of the LED chip layer 112 is not less than the height of the color filter layer 123, so that there is a color resistance 1231 between the adjacent two barrier walls 125, that is, each color resistance 1231 is surrounded by adjacent two barrier walls 125. The barrier walls 125 of the present embodiment are integrated with the black matrix 1232, which is conducive to simplifying the process and improving production efficiency.

[0048] In other embodiments, referring to Figure 1 , the display panel further includes an array of barrier walls 125. The barrier walls 125 are disposed between the first transparent encapsulation layer 113 and the second transparent encapsulation layer 122, and support the first substrate 110 and the second substrate 120. An adjacent two barrier walls 125 are provided with a color conversion unit 1243 and the barrier walls 125 are opaque. In other words, the adjacent two color conversion units 1243 are isolated by the barrier walls 125, which is conducive to the alignment of light and color resistance 1231, avoids the subsequent chaotic emission of light, and the barrier walls 125 can also avoid the scattering of light from the quantum dot layer 124 at too large an angle, affecting the display effect. The barrier walls 125 can be made of the material of the black matrix 1232, which can support and block water vapor, and also block light and avoid light scattering.

[0049] It should be noted that, referring to Figure 1 and Figure 2 , for the display panel 100 in the embodiment where the height of the barrier walls 125 from the side of the LED chip layer 112 is not less than the height of the color filter layer 123, it can have a second transparent encapsulation layer 122 or not. If it has a second transparent encapsulation layer 122, the second transparent encapsulation layer 122 is disposed on the color filter layer 123, covers the barrier walls 125 and the plurality of color resistances 1231, and ensures that the encapsulation layer is transparent, further improving the encapsulation effect without affecting light emission.

[0050] In some embodiments, referring toFigure 3 The color film layer 123 is arranged on the side of the second transparent encapsulation layer 122 away from the LED chip 1121, and the color film layer 123 includes color resist 1231 arranged in an array. The display panel includes black matrix 1232 arranged in an array, and one color resist 1231 is arranged between two adjacent black matrix 1232. In this embodiment, the barrier wall 125 and the black matrix 1232 are arranged separately, and the second transparent encapsulation layer 122 mainly plays an encapsulation role on the quantum dot layer 124 and provides planarization conditions for forming the color film layer 123 and the black matrix 1232. In this embodiment, the black matrix 1232 mainly plays a role of blocking light to avoid light interference of different colors, and the barrier wall 125 mainly plays a role of supporting the two opposing substrates and blocking water vapor.

[0051] It should be noted that, in order to simplify the description of the embodiments of the present application and to facilitate the understanding of one or more embodiments, in the foregoing description of the embodiments, various features are sometimes combined into an embodiment, a drawing or a description thereof. However, this method of expression does not mean that the features required by the present application are more than the features mentioned in the claims. In fact, the features of the embodiments are less than all the features of the single embodiments disclosed above.

Claims

1. A display panel, characterized by, The display panel comprises: a first substrate comprising a driving circuit layer and a plurality of arrayed LED chips, the LED chips being arranged on the driving circuit layer, and each of the LED chips being electrically connected to a driving circuit in the driving circuit layer; a quantum dot layer arranged on the first substrate and covering the plurality of LED chips; a second substrate arranged opposite to the first substrate and comprising a color filter layer, the color filter layer being arranged on a side of the quantum dot layer away from the LED chips, and a normal projection of the color filter layer on the first substrate covering the plurality of LED chips, the quantum dot layer emitting white light under excitation of light emitted by the LED chips; the quantum dot layer comprising arrayed color conversion units, each of the color conversion units being arranged opposite to one of the LED chips, and each of the color conversion units comprising a plurality of first quantum dots and a plurality of second quantum dots, the color of the first quantum dots being different from the color of the second quantum dots; the color filter layer comprising arrayed blue color resist, red color resist and green color resist, the blue color resist being arranged opposite to the color conversion units, the green color resist being arranged opposite to the color conversion units, and the red color resist being arranged opposite to the color conversion units, the color of the color resist opposite to adjacent two of the color conversion units being different; the first substrate further comprising a first substrate and a first transparent encapsulation layer, the driving circuit layer being arranged on the first substrate, the plurality of LED chips being arranged on a side of the driving circuit layer away from the first substrate, and the first transparent encapsulation layer covering the plurality of LED chips; the display panel comprising arrayed barrier walls, the barrier walls being arranged on the first substrate and surrounded by the first transparent encapsulation layer, a height of a side of the barrier walls away from the first substrate being not less than a height of the color filter layer, and one of the color conversion units being arranged between adjacent two of the barrier walls and the barrier walls being opaque.

2. The display panel of claim 1, wherein, The color conversion unit comprises a transparent adhesive layer, the first quantum dots and the second quantum dots being filled in the transparent adhesive layer, a quantity ratio of the first quantum dots to the second quantum dots ranging from 0.7 to 1.4, and a total mass percentage of the first quantum dots and the second quantum dots in the transparent adhesive layer ranging from 20% to 50%.

3. The display panel of claim 2, wherein, The quantity ratio of the first quantum dots to the second quantum dots is 1:1, and the total mass percentage of the first quantum dots and the second quantum dots in the transparent adhesive layer is 40%.

4. The display panel of claim 1, wherein, The display panel further comprises a second transparent encapsulation layer, the second transparent encapsulation layer being arranged between the quantum dot layer and the color filter layer or being arranged on a side of the color filter layer away from the quantum dot layer.

5. The display panel of claim 4, wherein, The display panel comprises arrayed barrier walls, the barrier walls being arranged between the first transparent encapsulation layer and the second transparent encapsulation layer, one of the color conversion units being arranged between adjacent two of the barrier walls and the barrier walls being opaque.

6. The display panel of claim 4, wherein, The color film layer is arranged on the side of the second transparent encapsulation layer away from the LED chip, and the color film layer comprises color resist arranged in an array.

7. The display panel of any one of claims 1 to 6, wherein, The color of the first quantum dot is one of red and green, the color of the second quantum dot is one of red and green, and the color of the light emitted by the LED chip is blue.

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