Display panel

Abstract

The invention 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 LED chips arranged in an array. The plurality of LED chips are arranged on the driving circuit layer and are electrically connected with a 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 and the first substrate are oppositely arranged, the second substrate comprises a color film layer, the color film layer is arranged on the side, away from the LED chips, of the quantum dot layer, the orthographic projection of the color film layer on the first substrate covers the plurality of LED chips, and the quantum dot layer emits white light under excitation of light emitted by the LED chips. According to the quantum dot layer, area distinguishing and color ink jetting are not needed, only one-time unified ink jetting needs to be carried out, the quantum dot layer forming working procedures are reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display panel. Background Art

[0002] Traditional Mini / Micro-LED (Mini / Micro-Light Emitting Diode) display panels use QD (Quantum Dots) color conversion technology, which combines blue Mini / Micro-LED with red and green QD to achieve full-color display. However, since QD color conversion technology requires multiple inkjet printing processes, the quantum dot layer has more molding steps, which affects the production efficiency of the product. Summary of the invention

[0003] In view of this, the present application provides a display panel to improve the problem that the QD color conversion technology uses multiple inkjet printing processes, which affects the product production efficiency.

[0004] The technical solution adopted by this application to solve the above technical problems is:

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

[0006] A first substrate, comprising a driving circuit layer and a plurality of LED chips arranged in an array, wherein the LED chips are arranged on the driving circuit layer, and the plurality of LED chips are electrically connected to the driving circuit in the driving circuit layer;

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

[0008] The second substrate is arranged to be matched with the first substrate, and includes a color filter layer. The color filter layer is arranged on a side of the quantum dot layer away from the LED chip. The orthographic projection of the color filter layer on the first substrate covers a plurality of the LED chips. The quantum dot layer emits white light when excited by the light emitted by the LED chip.

[0009] In some embodiments of the present application, the quantum dot layer includes color conversion units arranged in an array, the color conversion units are aligned one by one 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 colors of the first quantum dots and the second quantum dots are different.

[0010] In some embodiments of the present application, the color conversion unit includes a transparent adhesive layer, the first quantum dots and the second quantum dots are both filled in the transparent adhesive layer, the number ratio of the first quantum dots and the second quantum dots ranges from 0.7 to 1.4, and the total mass ratio 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 to the second quantum dots is 1:1, and the total mass of the first quantum dots and the second quantum dots in the transparent adhesive layer accounts for 40%.

[0012] In some embodiments of the present application, the color filter layer includes blue color resist, red color resist and green color resist arranged in an array, the blue color resist is arranged in alignment with the color conversion unit, the green color resist is arranged in alignment with the color conversion unit, the red color resist is arranged in alignment with the color conversion unit, and the colors of the color resists aligned with two adjacent color conversion units are different.

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

[0014] In some embodiments of the present application, the display panel includes retaining walls arranged in an array, the retaining walls are provided on the first substrate and surrounded by the first transparent encapsulation layer, the height of the retaining wall away from the first substrate is not less than the height of the color film layer, and a color conversion unit is provided between two adjacent retaining walls and the retaining wall is opaque.

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

[0016] In some embodiments of the present application, the display panel includes blocking walls arranged in an array, the blocking walls are disposed between the first transparent encapsulation layer and the second transparent encapsulation layer, a color conversion unit is disposed between two adjacent blocking walls, and the blocking walls are opaque.

[0017] In some embodiments of the present application, the color filter layer is arranged on a side of the second transparent encapsulation layer away from the LED chip, and the color filter layer includes color resists arranged in an array, the display panel includes black matrices arranged in an array, and one color resist is provided between two adjacent black matrices.

[0018] In some embodiments of the present application, 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.

[0019] In summary, due to the adoption of the above technical solution, this application has at least the following beneficial effects:

[0020] The embodiment of the present application provides a display panel, which uses LED chips and quantum dot layers to convert the light emitted by the LED chips into white light, and the white light then passes through the color film layer to emit light of the same color as the color film layer, so as to display different color images. In addition, because the quantum dot layer does not need to be patterned for multiple colors and regions as in the related art, but only needs to be patterned once, that is, only one ink is printed, which is conducive to simplifying the production process of the quantum dot layer and improving production efficiency. Moreover, because only one ink needs to be printed, the restriction of the inkjet printing process on the resolution of the display panel is also relieved, and the resolution of the display panel when the inkjet printing process is applied to prepare the quantum dot layer is improved. In detail, firstly, a plurality of LED chips are arranged in an array and electrically connected to the driving circuit layer so that the LED chips can emit light; then, by setting a quantum dot layer covering a plurality of LED chips and a color film layer covering a plurality of LED chips, the quantum dot layer can emit white light under the excitation of the light emitted by the LED chips, so that the light emitted by all LED chips will be converted into white light after passing through the quantum dot layer, and the white light will then pass through the color film layer to filter the light color, so as to realize the display of the target color image. Moreover, because all light passing through the quantum dot layer will be converted into white light, there is no need to perform inkjet printing of multiple inks during the quantum dot layer manufacturing process. Only one inkjet printing is required to complete the patterning of the quantum dot layer, which helps to reduce the number of process steps and exposure times, and removes the constraints of the inkjet printing process on the resolution of the display panel, thereby improving the resolution of the display panel when the inkjet printing process is used to prepare the quantum dot layer. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

[0024] Description of reference numerals:

[0025] 100, display panel; 110, first substrate; 111, drive 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, retaining wall. DETAILED DESCRIPTION

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

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

[0028] At the same time, the present application uses specific words to describe the embodiments of the present application. For example, "one embodiment", "an embodiment", and / or "some embodiments" refer to a certain feature, structure or characteristic related to at least one embodiment of the present application. Therefore, it should be emphasized and noted that "one embodiment" or "an embodiment" or "an alternative embodiment" mentioned twice or more in different positions in this 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 appropriately combined.

[0029] See also Figures 1 to 3 An embodiment of the present application provides a display panel 100 including a first substrate 110 , a second substrate 120 and a quantum dot layer 124 .

[0030] The first substrate 110 includes a driving circuit layer 111 and an LED chip layer 112. The LED chip layer 112 is disposed on the driving circuit layer 111 and includes a plurality of LED chips 1121 arranged in an array. 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 disposed on the first substrate 110 and covers the plurality of LED chips 1121 .

[0032] The second substrate 120 is arranged in alignment with the first substrate 110, and includes 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 chip 1121, and the orthographic projection of the color filter layer 123 on the first substrate 110 covers a plurality of LED chips 1121. The quantum dot layer 124 emits white light under the stimulation of the light emitted by the LED chip 1121.

[0033] It should be noted that the quantum dot layer 124 covering multiple LED chips 1121 means that the projection of the quantum dot layer 124 toward the LED chip layer 112 covers multiple LED chips 1121; similarly, the color film layer 123 covering multiple LED chips 1121 means that the projection of the color film layer 123 toward the LED chip layer 112 covers multiple LED chips 1121.

[0034] The technical solution provided in the present application utilizes the cooperation between the LED chip 1121 and the quantum dot layer 124 so that the light emitted by the LED chip 1121 is converted into white light, and the white light then passes through the color film layer 123 so that light of the same color as the color film layer 123 is emitted, thereby completing the display of pictures of different colors. In addition, because the quantum dot layer 124 does not need to be patterned for multiple colors and regions as in the related technology, but only needs to be patterned once, that is, only one ink is used for printing, the restriction of the inkjet printing process on the resolution of the display panel 100 is eliminated, and the resolution of the display panel 100 is improved when the inkjet printing process is used to prepare the quantum dot layer 124. In detail, first, multiple 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, by providing a quantum dot layer 124 covering the multiple LED chips 1121 and a color film layer 123 covering the multiple LED chips 1121, the quantum dot layer 124 can emit white light when excited by the light emitted by the LED chips 1121, so that the light emitted by all LED chips 1121 will be converted into white light after passing through the quantum dot layer 124, and the white light will then be filtered by the color film layer 123 to achieve the target color screen display. Furthermore, because all light passing through the quantum dot layer 124 will be converted into white light, the quantum dot layer 124 does not need to be inkjet printed with multiple inks during the manufacturing process. Only one inkjet printing is required to complete the patterning of the quantum dot layer 124, which helps to reduce the manufacturing steps and the number of exposures, and removes the constraints 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 used to prepare the quantum dot layer 124.

[0035] In the examples of this application, see Figure 1 or Figure 2 or Figure 3, a plurality of first quantum dots 1241 and a plurality of second quantum dots 1242 are provided in the quantum dot layer 124. The color of the first quantum dot 1241 is one of red and green, the color of the second quantum dot 1242 is one of red and green, and the color of the light emitted from the LED chip 1121 is blue. By utilizing 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 dot 1241 is different from the color of the second quantum dot 1242, that is, the color of the first quantum dot 1241, the color of the second quantum dot 1242 and the color of the light emitted from 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 colors of the light emitted by the first quantum dot 1241, the second quantum dot 1242 and the LED chip 1121 respectively one of the three different primary colors, 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 dot 1241 and the second quantum dot 1242, and the white light is then matched with the aforementioned color filter layer 123, and the light passing through the color filter layer 123 can filter out the light of the color corresponding to the color filter layer 123 for emission. For the quantum dot layer 124 in this embodiment, because its entire layer structure is an ink layer containing the first quantum dot 1241 and the second quantum dot 1242, it is not necessary to perform inkjet printing by dividing the area and color, and only one inkjet printing is required, which is conducive to reducing the process and improving the production efficiency, and it will not be limited by the resolution of multiple inkjet printing.

[0036] Furthermore, the color of the light emitted by the LED chip 1121 is blue, the color of the first quantum dot 1241 is red, and the color of the second quantum dot 1242 is green. The LED chip 1121 emits blue light, and the blue light enters the quantum dot layer 124, exciting the first quantum dot 1241 and the second quantum dot 1242, so that the first quantum dot 1241, the second quantum dot 1242 and the blue light form three primary colors and combine, converting the light into white light for emission.

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

[0038] In some embodiments, the quantum dot layer 124 includes color conversion units 1243 arranged in an array, and a plurality of first quantum dots 1241 and a plurality of second quantum dots 1242 are arranged in the color conversion unit 1243. The color conversion unit 1243 is arranged one by one with the LED chip 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 between the LED chips 1121 arranged in an array when emitting light, and interference when exciting the first quantum dots 1241 and the second quantum dots 1242, resulting in the subsequent white light emission angle being too chaotic. In addition, the quantum dot layer 124 is divided into a plurality of color conversion units 1243 aligned one by one with the LED chip 1121, which provides a positioning basis for the subsequent arrangement of the color filter layer 123.

[0039] The color conversion unit includes a transparent adhesive layer. The first quantum dots 1241 and the second quantum dots 1242 are both filled in the transparent adhesive layer, and the ratio of the number 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 ratio of the number 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 more than the number of the second quantum dots 1242, and the ratio of the number 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, that is, the ratio of the number of the first quantum dots 1241 to the second quantum dots 1242 is 1. The total mass proportion 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 proportion 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 a large difference between the number of one quantum dot and the number of another quantum dot, which affects the multi-color display effect of the display panel.

[0040] Furthermore, the ratio of the number of the first quantum dots 1241 and the second quantum dots 1242 is 1:1, that is, the number of the first quantum dots 1241 and the second quantum dots 1242 is the same or approximately the same, which is conducive to a more even amount of light converted by the first quantum dots 1241 and the second quantum dots 1242. The total mass of the first quantum dots 1241 and the second quantum dots 1242 in the transparent adhesive layer accounts for 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 be filled in the transparent adhesive layer as much as possible to improve the light conversion efficiency.

[0041] In some embodiments, the color filter layer 123 includes a plurality of color resists 1231 arranged in an array, and the color resists 1231 are aligned with the color conversion units 1243 one by one, so as to ensure that the light emitted by an LED chip 1121 can be emitted into the corresponding color resist 1231 as much as possible after being converted into white light by the aligned color conversion units 1243. And a portion of the color resists 1231 is blue, a portion of the color resists 1231 is red, and a portion of the color resists 1231 is green. The plurality of color resists 1231 are divided into blue color resists 1231, red color resists 1231, and green color resists 1231, so that the white light can emit blue, red, and green light after passing through the color filter layer 123. These three colors are the three primary colors, that is, by combining these three colors of light, other colors of light can be obtained, thereby satisfying the requirements of the display panel 100 for displaying various images.

[0042] Furthermore, every three colors of color resist 1231 form a color resist unit, and a plurality of color resist units are arranged in an array 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 underlayer 114 and a first transparent encapsulation layer 113. The first transparent encapsulation layer 113 and the LED chip layer 112 are both disposed on the side of the first substrate 114 facing the second substrate 120, and the first transparent encapsulation layer 113 covers the LED chip layer 112. The first transparent encapsulation layer 113 can be used to encapsulate and protect the driving circuit layer 111 and the LED chip layer 112, thereby preventing water vapor erosion from affecting the normal operation 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, an inorganic substrate or an organic substrate, which is not limited here. The driving circuit layer 111 is arranged on the first substrate 114, and the driving circuit layer 111 includes a driving circuit. The driving circuit is used to drive the LED chip 1121 on the LED chip layer 112 to emit light. The driving circuit may include electronic components such as thin film transistors, capacitors, and signal lines. The specific setting method can refer to the setting method of the driving circuit layer 111 known to those skilled in the art, which is not limited here. A plurality of LED chips 1121 are arranged adjacent to each other in sequence on the driving circuit layer 111, 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, and is used to protect the driving circuit and the LED chip 1121 from the influence of water vapor erosion. And because 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, so the encapsulation effect is better, and there will be no 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 flattening role and facilitates the subsequent arrangement of the quantum dot layer 124.

[0045] For further information, see Figure 2 and Figure 3 The second substrate 120 further includes a second transparent encapsulation layer 122, which is disposed on a 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 can also achieve a flattening effect.

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

[0047] In some embodiments, the display panel includes a baffle 125 arranged in an array. The baffle 125 is disposed on the first substrate 114 and is surrounded by the first transparent encapsulation layer 113. The height of the side of the baffle 125 away from the first substrate 114 is not less than the height of the color film layer 123. A color conversion unit 1243 is provided between two adjacent baffles 125, and the baffle 125 is opaque. The baffle 125 can isolate adjacent color conversion units 1243 and can support and block water vapor. In addition, isolating two adjacent color conversion units 1243 by the baffle 125 is conducive to the alignment of light and color resistance 1231, avoiding the disorderly emission of subsequent light, and the baffle 125 can also prevent the light of the quantum dot layer 124 from being scattered at too large an angle, affecting the display effect. The height of the side of the retaining wall 125 away from the LED chip layer 112 is not less than the height of the color filter layer 123, so that there is a color block 1231 between two adjacent retaining walls 125, that is, in the side direction, each color block 1231 is surrounded by two adjacent retaining walls 125. The retaining wall 125 of this embodiment is equivalent to integrating the retaining wall 125 with the black matrix 1232, which is conducive to simplifying the process and improving production efficiency.

[0048] In other embodiments, see Figure 1 The display panel also includes a baffle 125 arranged in an array. The baffle 125 is disposed between the first transparent encapsulation layer 113 and the second transparent encapsulation layer 122, and plays a certain supporting role in the alignment of the first substrate 110 and the second substrate 120. A color conversion unit 1243 is provided between two adjacent baffles 125, and the baffle 125 is opaque. In other words, isolating two adjacent color conversion units 1243 by the baffle 125 is conducive to the alignment of light and color resistance 1231, avoiding the subsequent disorderly emission of light, and the baffle 125 can also avoid the light of the quantum dot layer 124 from being scattered at too large an angle, affecting the display effect. The baffle 125 can be made of the material of the black matrix 1232, so that it can not only play the role of supporting and blocking water vapor, but also play the role of shading and avoiding light scattering.

[0049] Please note that, see Figure 1 and Figure 2 For the display panel 100 in the embodiment where the height of the side of the retaining wall 125 away from the LED chip layer 112 is not less than the height of the color filter layer 123, it may have a second transparent encapsulation layer 122 or may not have the second transparent encapsulation layer 122. If there is a second transparent encapsulation layer 122, the second transparent encapsulation layer 122 is arranged on the color filter layer 123, covers the retaining wall 125 and the plurality of color resists 1231, and ensures that the encapsulation layer is transparent, so as to further improve the encapsulation effect without affecting the light emission.

[0050] In some embodiments, see Figure 3 , the color filter layer 123 is arranged on the side of the second transparent encapsulation layer 122 away from the LED chip 1121, and the color filter layer 123 includes color resists 1231 arranged in an array. The display panel includes a black matrix 1232 arranged in an array, and a color resist 1231 is provided between two adjacent black matrices 1232. In this embodiment, the retaining wall 125 and the black matrix 1232 are separately provided, and the second transparent encapsulation layer 122 mainly plays a role in encapsulating the quantum dot layer 124 and provides flattening conditions for the formation of the color filter layer 123 and the black matrix 1232. In this embodiment, the black matrix 1232 mainly plays a role in blocking light and avoiding crosstalk between lights of different colors, and the retaining wall 125 mainly plays a role in supporting the two mating 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 thus help understand one or more embodiments, in the above description of the embodiments, multiple features are sometimes combined into one embodiment, figure or description thereof. However, this method of expression does not mean that the features required by the object of 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 embodiment disclosed above.

Claims

1. A display panel, characterized in that: include: A first substrate, comprising a driving circuit layer and a plurality of LED chips arranged in an array, wherein the LED chips are arranged on the driving circuit layer, and the plurality of LED chips are electrically connected to the driving circuit in the driving circuit layer; A quantum dot layer, disposed on the first substrate and covering the plurality of LED chips; The second substrate is arranged to be matched with the first substrate, and includes a color filter layer. The color filter layer is arranged on a side of the quantum dot layer away from the LED chip. The orthographic projection of the color filter layer on the first substrate covers a plurality of the LED chips. The quantum dot layer emits white light when excited by the light emitted by the LED chip.

2. The display panel according to claim 1, wherein: The quantum dot layer includes color conversion units arranged in an array, the color conversion units are arranged one by one 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 colors of the first quantum dots and the second quantum dots are different.

3. The display panel according to claim 2, wherein: The color conversion unit includes a transparent adhesive layer, the first quantum dots and the second quantum dots are both 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 proportion of the first quantum dots and the second quantum dots in the transparent adhesive layer ranges from 20% to 50%.

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

5. The display panel according to claim 2, wherein: The color filter layer includes blue color resist, red color resist and green color resist arranged in an array, the blue color resist is arranged in alignment with the color conversion unit, the green color resist is arranged in alignment with the color conversion unit, the red color resist is arranged in alignment with the color conversion unit, and the colors of the color resists aligned with two adjacent color conversion units are different.

6. The display panel according to claim 5, wherein: The first substrate also includes a first underlay and a first transparent packaging layer. The driving circuit layer is arranged on the first substrate. The plurality of LED chips are arranged on a side of the driving circuit layer away from the first substrate. The first transparent packaging layer covers the plurality of LED chips.

7. The display panel according to claim 6, wherein: The display panel includes blocking walls arranged in an array, wherein the blocking walls are disposed on the first substrate and surrounded by the first transparent encapsulation layer, the height of the blocking wall away from the first substrate is not less than the height of the color film layer, and a color conversion unit is provided between two adjacent blocking walls and the blocking wall is opaque.

8. The display panel according to claim 6, wherein: The display panel further includes a second transparent encapsulation layer, which is disposed between the quantum dot layer and the color filter layer or on a side of the color filter layer away from the quantum dot layer.

9. The display panel according to claim 8, wherein: The display panel includes blocking walls arranged in an array, the blocking walls are arranged between the first transparent encapsulation layer and the second transparent encapsulation layer, one color conversion unit is arranged between two adjacent blocking walls, and the blocking walls are opaque.

10. The display panel according to claim 8, wherein: The color filter layer is arranged on a side of the second transparent encapsulation layer away from the LED chip, and the color filter layer includes color resists arranged in an array. The display panel includes black matrices arranged in an array, and one color resist is arranged between two adjacent black matrices.

11. The display panel according to any one of claims 2 to 10, characterized in that: 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.

Images