Display panel and display device

Abstract

The invention provides a display panel and a display device. The display panel comprises a first substrate and a second substrate, and the first substrate comprises a light emitting layer and a light path control layer which are arranged in a stacked mode; the display panel is provided with a plurality of pixel units formed on a first substrate and a second substrate, and each pixel unit comprises a first sub-pixel area, a second sub-pixel area and a third sub-pixel area. Each pixel unit further comprises a first organic light-emitting diode, a second organic light-emitting diode, a light-emitting chip and a light path control structure, and the first organic light-emitting diode is arranged on the light-emitting layer and located in the first sub-pixel area; the second organic light emitting diode is arranged on the light emitting layer and located in the second sub-pixel region; the light-emitting chip is arranged on the second substrate; and the light path control structure is arranged on the light path control layer and is used for performing light path control on the third color light emitted by the light-emitting chip, so that at least part of the third color light is emitted from the third sub-pixel region. The display panel provided by the invention is relatively long in service life.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to a display panel and a display device. Background Art

[0002] OLED (Organic Light Emitting Diode) display technology has many advantages such as ultra-high color gamut, ultra-high contrast ratio, ultra-thin, and flexible display. With the gradual maturity of the manufacturing ability of OLED display technology, it has gradually replaced traditional LCD (Liquid Crystal Display) modules in the fields of mobile phones and tablets.

[0003] In a conventional OLED display panel product, its imaging principle is mainly that different organic light-emitting materials can generate different colors of light under the action of current. The organic light-emitting materials corresponding to the three primary colors are integrated within the same pixel. Under the control of the input current, each pixel will emit light of a specific color. A large number of pixels are evenly arranged and, driven by an external signal, finally form an image visible to the human eye.

[0004] However, since common organic materials decay when generating light, and the higher the energy of the light, the shorter the lifespan. In an OLED display panel, the frequencies of sub-pixels of different colors are different, and thus, the energies of the emitted light are also different. For example, in an OLED display panel that uses RGB as the three primary colors for color display, the frequency of blue light is the highest, and the energy of the blue light emitted by the blue sub-pixel is the greatest. Therefore, the decay speed of the blue sub-pixel is the fastest, and its service life is the shortest. Therefore, in a conventional OLED display panel, sub-pixels with a fast decay speed and a short service life will seriously affect the display performance of the OLED display panel and hinder the development of the OLED display panel. Summary of the Invention

[0005] In view of this, the main purpose of this application is to propose a display panel and a display device, aiming to solve the problem that sub-pixels with a fast decay speed and a short service life in an existing OLED display panel seriously affect the display performance of the OLED display panel.

[0006] To achieve the above object, a first aspect of the present application provides a display panel, which includes a first substrate and a second substrate. The first substrate includes a light-emitting layer and an optical path control layer stacked thereon; the second substrate is disposed on a side where the optical path control layer of the first substrate is located; wherein, the display panel has a plurality of pixel units formed on the first substrate and the second substrate and distributed in an array, and each pixel unit at least includes a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region; each pixel unit further includes a first organic light-emitting diode, a second organic light-emitting diode, a light-emitting chip, and an optical path control structure. The first organic light-emitting diode is disposed on the light-emitting layer and located in the first sub-pixel region, and is used to emit first-color light; the second organic light-emitting diode is disposed on the light-emitting layer and located in the second sub-pixel region, and is used to emit second-color light; the light-emitting chip is disposed on the second substrate and is used to emit third-color light toward the optical path control layer; the optical path control structure is disposed on the optical path control layer and is used to perform optical path control on the third-color light when receiving the third-color light emitted by the light-emitting chip, so that at least part of the third-color light is emitted from the third sub-pixel region.

[0007] In the display panel provided by the present application, the first organic light-emitting diode for emitting first-color light and the second organic light-emitting diode for emitting second-color light are disposed on the first substrate, and the light-emitting chip for emitting third-color light is disposed on the second substrate. In this way, the traditional OLED display panel and the MicroLED display panel are combined, and the third organic light-emitting diode for emitting third-color light in the existing OLED display panel is replaced with an inorganic light-emitting chip, which can improve the service life of the OLED display panel. In addition, since there are significant differences between the manufacturing processes of organic light-emitting diodes and light-emitting chips, the organic light-emitting diodes and the light-emitting chips are respectively disposed on the first substrate and the second substrate, so that the first substrate and the second substrate can be manufactured separately, which can reduce the manufacturing difficulty.

[0008] In some embodiments, the optical path control structure performing optical path control on the third-color light includes adjusting the emission direction of the third-color light and / or adjusting the transmittance of the third-color light.

[0009] In some embodiments, the optical path control structure controls the optical path of the third color light ray including adjusting the exit direction of the third color light ray; the third sub-pixel region in each pixel unit is adjacent to both the first sub-pixel region and the second sub-pixel region; the light-emitting chip includes a first light-emitting chip and / or a second light-emitting chip, the first light-emitting chip is located in the first sub-pixel region, and the second light-emitting chip is located in the second sub-pixel region; the optical path control structure is at least used to adjust the exit direction of the third color light ray emitted by the first light-emitting chip and / or the second light-emitting chip, so that at least part of the third color light ray is emitted from the third sub-pixel region.

[0010] In some embodiments, the light-emitting chip includes a first light-emitting chip, and the optical path control structure includes a first optical path control structure; the first optical path control structure includes a first reflection structure and a second reflection structure. The first reflection structure is disposed at a position corresponding to the first sub-pixel region of the optical path control layer and is located in the light exit path of the light emitted by the first light-emitting chip; the second reflection structure is disposed at a position corresponding to the third sub-pixel region of the optical path control layer and is located in the light exit path of the reflected light of the first reflection structure, and the light exit path of the second reflection structure is the path from the optical path control layer to the light exit layer of the third sub-pixel region; wherein, the first light-emitting chip is used to emit a third color light ray towards the first reflection structure, the first reflection structure is used to reflect at least part of the third color light ray emitted by the first light-emitting chip to the second reflection structure, and the second reflection structure is used to reflect the third color light ray from the first reflection structure to be emitted from the third sub-pixel region.

[0011] In some embodiments, the optical path control structure controlling the optical path of the third color light ray further includes adjusting the transmittance of the third color light ray; the first optical path control structure further includes a first electrochromic film, and the first electrochromic film is disposed between the first reflection structure and the second reflection structure, and the first electrochromic film is used to adjust the transmittance of the third color light ray reflected from the first reflection structure to the second reflection structure, so as to adjust the light exit brightness of the third color light ray emitted from the third sub-pixel region.

[0012] In some embodiments, each of the pixel units further includes a fourth sub-pixel region located on a side of the first sub-pixel region away from the third sub-pixel region; each of the pixel units further includes a first excitation light-emitting unit disposed at a position of the light-emitting layer corresponding to the fourth sub-pixel region; the first optical path control structure is further configured to adjust an exit direction of third-color light emitted by the first light-emitting chip, so that part of the third-color light irradiates the first excitation light-emitting unit to excite the first excitation light-emitting unit to emit white light.

[0013] In some embodiments, the first optical path control structure further includes a third reflection structure and a fourth reflection structure. The third reflection structure is disposed at a position of the optical path control layer corresponding to the first sub-pixel region and is located in an exit path of light emitted by the first light-emitting chip; the fourth reflection structure is disposed at a position of the optical path control layer corresponding to the fourth sub-pixel region and is located in an exit path of the reflected light of the third reflection structure, and an exit path of the fourth reflection structure is a path from the optical path control layer to the light-emitting layer of the fourth sub-pixel region; wherein, the first light-emitting chip is further configured to emit third-color light toward the third reflection structure, the third reflection structure is configured to reflect part of the third-color light emitted by the first light-emitting chip to the fourth reflection structure, and the fourth reflection structure is configured to reflect the third-color light from the third reflection structure to irradiate the first excitation light-emitting unit.

[0014] In some embodiments, the first optical path control structure further includes a second electro-optically transmissive film disposed between the third reflection structure and the fourth reflection structure. The second electro-optically transmissive film is configured to adjust a transmittance of the third-color light reflected from the third reflection structure to the fourth reflection structure, so as to adjust an exit brightness of the white light exiting from the fourth sub-pixel region.

[0015] In some embodiments, each of the pixel units further includes a second excitation light-emitting unit disposed at a position of the light-emitting layer corresponding to the first sub-pixel region and located between the first organic light-emitting diode and the optical path control layer; the first reflection structure is further configured to make part of the third-color light emitted by the first light-emitting chip irradiate the second excitation light-emitting unit, so that the second excitation light-emitting unit is excited to emit white light toward the first organic light-emitting diode to enhance an exit brightness of the first-color light exiting from the first sub-pixel region.

[0016] In some embodiments, the first reflection structure includes a first semi-transmissive and semi-reflective film and a third electrochromic film. The first semi-transmissive and semi-reflective film is configured to receive the third-color light emitted by the first light-emitting chip, transmit a part of the received third-color light, and reflect the other part of the received third-color light to the second reflection structure. The third electrochromic film is disposed between the first semi-transmissive and semi-reflective film and the second excitation light-emitting unit, and is configured to adjust the transmittance of the third-color light transmitted from the first semi-transmissive and semi-reflective film to the second excitation light-emitting unit.

[0017] A second aspect of the present application further provides a display device, which includes a driving circuit and the display panel described in the first aspect above. Wherein, the driving circuit is configured to output a control signal to the display panel to control the display panel to perform display.

[0018] Additional aspects and advantages of the present application will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present application. Description of the Drawings

[0019] Figure 1 It is a schematic structural diagram of a display panel provided by an embodiment of the present application;

[0020] Figure 2 is Figure 1 a partial enlarged view of the first substrate in the shown display panel;

[0021] Figure 3 is Figure 1 a partial enlarged view of the second substrate in the shown display panel;

[0022] Figure 4 is Figure 1 an optical path diagram of the shown display panel in the normal display mode;

[0023] Figure 5 is Figure 1 an optical path diagram of the shown display panel in the high-brightness display mode;

[0024] Figure 6 It is a flowchart of a method for manufacturing a display panel provided by an embodiment of the present application;

[0025] Figures 7a to 7e is Figure 1 a manufacturing process diagram of the first substrate in the shown display panel;

[0026] Figures 8a to 8b is Figure 1 a manufacturing process diagram of the second substrate in the shown display panel;

[0027] Figure 9Schematic structural diagram of the display device provided by the embodiment of the present application.

[0028] The description of the reference numerals is as follows:

[0029] 10 - Display panel; 1 - First substrate; 2 - Second substrate; 11 - Light-emitting layer; 12 - Optical path control layer; P - Pixel unit; P1 - First sub-pixel region; P2 - Second sub-pixel region; P3 - Third sub-pixel region; P4 - Fourth sub-pixel region; P5 - Fifth sub-pixel region; 111 - First organic light-emitting diode; 112 - Second organic light-emitting diode; 21 - Light-emitting chip; 211 - First light-emitting chip; 212 - Second light-emitting chip; 121 - First optical path control structure; 122 - Second optical path control structure; 1213 - First reflection structure; 1211 - Second reflection structure; 1214 - Third reflection structure; 1216 - Fourth reflection structure; 1223 - Fifth reflection structure; 1221 - Sixth reflection structure; 1224 - Seventh reflection structure; 1226 - Eighth reflection structure; 1212 - First electrochromic film; 1215 - Second electrochromic film; 12132 - Third electrochromic film; 12142 - Fourth electrochromic film; 1222 - Fifth electrochromic film; 1225 - Sixth electrochromic film; 12232 - Seventh electrochromic film; 12242 - Eighth electrochromic film; 114 - First excitation light-emitting unit; 115 - Second excitation light-emitting unit; 117 - Third excitation light-emitting unit; 116 - Fourth excitation light-emitting unit; 12131 - First semi-transparent and semi-reflective film; 12141 - Second semi-transparent and semi-reflective film; 12231 - Third semi-transparent and semi-reflective film; 12241 - Fourth semi-transparent and semi-reflective film; 3 - Isolation column; 4 - Transparent material; a - First surface; b - Second surface; c - Third surface; d - Fourth surface; e - Fifth surface; f - Sixth surface; g - Seventh surface; h - Eighth surface; 1201 - Plated substrate; 1101 - First transparent conductive layer; 1102 - Second transparent conductive layer; 1103 - Third transparent conductive layer; 1104 - Glass substrate; 1105 - Circular polarizer; 201 - Chip substrate; 202 - Fourth transparent conductive layer; 203 - Protective film layer; 100 - Display device; 20 - Driving circuit.

[0030] The following specific embodiments will further illustrate the present application in conjunction with the above-mentioned drawings. Specific Embodiments

[0031] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0032] In addition, the terms "first", "second", etc. in the specification of the present application are used to distinguish similar objects and do not necessarily describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or modules does not necessarily have to be limited to those steps or modules clearly listed, but may include other steps or modules that are not clearly listed or are inherent to these processes, methods, products, or devices.

[0033] It should be noted that, without conflict, the features in the embodiments of the present application can be combined with each other.

[0034] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of a display panel provided by an embodiment of the present application. The present application provides a display panel 10, and the display panel 10 includes a first substrate 1 and a second substrate 2.

[0035] Among them, the first substrate 1 includes a light-emitting layer 11 and an optical path control layer 12 which are stacked.

[0036] The second substrate 2 is disposed on the side where the optical path control layer 12 of the first substrate 1 is located.

[0037] Among them, the display panel 10 has a plurality of pixel units P formed on the first substrate 1 and the second substrate 2 and distributed in an array. Each pixel unit P at least includes a first sub-pixel region P1, a second sub-pixel region P2, and a third sub-pixel region P3. Each pixel unit P further includes a first organic light-emitting diode 111, a second organic light-emitting diode 112, a light-emitting chip 21, and an optical path control structure.

[0038] Among them, the first organic light-emitting diode 111 is disposed on the light-emitting layer 11 and is located in the first sub-pixel region P1 for emitting first-color light.

[0039] The second organic light-emitting diode 112 is disposed on the light-emitting layer 11 and is located in the second sub-pixel region P2 for emitting second-color light.

[0040] The light-emitting chip 21 is disposed on the second substrate 2, and the light-emitting chip 21 is used to emit third-color light toward the optical path control layer 12.

[0041] The optical path control structure is disposed in the optical path control layer 12. The optical path control structure is configured to perform optical path control on the third color light when receiving the third color light emitted by the light-emitting chip 21, so that at least a part of the third color light reaches the area corresponding to the third sub-pixel region P3 of the light-emitting layer 11 after passing through the optical path control structure and is emitted from the third sub-pixel region P3.

[0042] Among them, the frequency of the third color light is higher than that of the second color light and higher than that of the first color light. For example Figure 1 As shown, in some embodiments, the third color light is blue light, the first color light is red light, and the second color light is green light. In other embodiments, it may also be that the third color light is blue light, the first color light is green light, and the second color light is red light. The first color light to the third color light may also be a combination of other three primary color lights, such as red, yellow, and blue, which is not limited herein.

[0043] Among them, the light-emitting chip 21 is an inorganic light-emitting diode chip. Specifically, the light-emitting chip 21 may be a MicroLED chip. The material of the inorganic light-emitting diode chip is an inorganic material. Due to the high stability of the inorganic material, the service life of the inorganic light-emitting diode chip is longer than that of the organic light-emitting diode.

[0044] The display panel 10 provided in the present application arranges the first organic light-emitting diode 111 for emitting the first color light and the second organic light-emitting diode 112 for emitting the second color light on the first substrate 1, and arranges the light-emitting chip 21 for emitting the third color light on the second substrate 2. In this way, by combining the traditional OLED display panel and the MicroLED display panel and replacing the third organic light-emitting diode for emitting the third color light in the existing OLED display panel with an inorganic light-emitting chip 21, the service life of the OLED display panel can be improved. In addition, since there are significant differences between the manufacturing processes of the organic light-emitting diode and the light-emitting chip 21, arranging the organic light-emitting diode and the light-emitting chip 21 on the first substrate 1 and the second substrate 2 respectively enables the first substrate 1 and the second substrate 2 to be manufactured separately, which can reduce the manufacturing difficulty.

[0045] In some embodiments, the optical path control structure performing optical path control on the third color light includes adjusting the emission direction of the third color light and / or adjusting the transmittance of the third color light.

[0046] Thus, by adjusting the emission direction and / or transmittance of the third color light in the optical path control layer 12, the emission angle and / or emission brightness of the third color light emitted from the third sub-pixel region P3 can be achieved.

[0047] In some embodiments, the light-emitting chip 21 may be disposed in the third sub-pixel region P3. At this time, the optical path control structure may only adjust the transmittance of the third color light without adjusting the emission direction of the third color light.

[0048] In some embodiments, the optical path control structure performs optical path control on the third color light including adjusting the emission direction of the third color light. The third sub-pixel region P3 in each pixel unit P is adjacent to both the first sub-pixel region P1 and the second sub-pixel region P2. The light-emitting chip 21 includes a first light-emitting chip 211 and / or a second light-emitting chip 212. The first light-emitting chip 211 is located in the first sub-pixel region P1, and the second light-emitting chip 212 is located in the second sub-pixel region P2. The optical path control structure is at least used to adjust the emission direction of the third color light emitted by the first light-emitting chip 211 and / or the second light-emitting chip 212, so that at least part of the third color light is emitted from the third sub-pixel region P3.

[0049] Exemplarily, as Figure 1 shown, in one implementation, the light-emitting chip 21 includes the first light-emitting chip 211 and the second light-emitting chip 212. Of course, in other implementations, the light-emitting chip 21 may also only include the first light-emitting chip 211 without including the second light-emitting chip 212, or only include the second light-emitting chip 212 without including the first light-emitting chip 211.

[0050] Among them, the first light-emitting chip 211 and the second sub-pixel region P2 may be set to the same specification. Disposing the light-emitting chip 21 in the first sub-pixel region P1 and / or the second sub-pixel region P2 can make the distance between chips larger. In this way, when manufacturing the second substrate 2, the mass transfer technology does not need to be used, and the manufacturing cost is low.

[0051] Please refer to Figures 1 to 3 , in some embodiments, the light-emitting chip 21 includes a first light-emitting chip 211, and the optical path control structure includes a first optical path control structure 121.

[0052] The first optical path control structure 121 includes a first reflection structure 1213 and a second reflection structure 1211.

[0053] Among them, the first reflection structure 1213 is disposed at a position of the optical path control layer 12 corresponding to the first sub-pixel region P1 and is located in the light-emitting path of the light emitted by the first light-emitting chip 211.

[0054] The second reflection structure 1211 is disposed at a position of the optical path control layer 12 corresponding to the third sub-pixel region P3 and is located in the light-emitting path of the reflected light of the first reflection structure 1213. The light-emitting path of the second reflection structure 1211 is the path from the optical path control layer 12 to the light-emitting layer 11 of the third sub-pixel region P3.

[0055] Among them, the first light-emitting chip 211 is used to emit third-color light rays toward the first reflection structure 1213. The first reflection structure 1213 is used to reflect at least part of the third-color light rays emitted by the first light-emitting chip 211 to the second reflection structure 1211. The second reflection structure 1211 is used to reflect the third-color light rays from the first reflection structure 1213 so as to emit them from the third sub-pixel region P3.

[0056] In some embodiments, the first reflection structure 1213 and the second reflection structure 1211 are planar structures. Among them, the incident angle when at least part of the third-color light rays emitted by the first light-emitting chip 211 irradiate on the reflection surface of the first reflection structure 1213 is greater than 0° and less than 90°. Preferably, the reflection surface of the first reflection structure 1213 is parallel to the reflection surface of the second reflection structure 1211. In other embodiments, the first reflection structure 1213 and the second reflection structure 1211 may also be of other shapes, such as arc-shaped structures, which are not limited herein.

[0057] In this way, the first reflection structure 1213 and the second reflection structure 1211 can cooperate to change the light-emitting path of at least part of the third-color light rays emitted by the first light-emitting chip 211, so that at least part of the third-color light rays can be emitted outward from the third sub-pixel region P3.

[0058] In some embodiments, the optical path control structure performs optical path control on the third color light ray, including adjusting the transmittance of the third color light ray. The first optical path control structure 121 further includes a first electrochromic film 1212, and the first electrochromic film 1212 is disposed between the first reflection structure 1213 and the second reflection structure 1211, that is, the first electrochromic film 1212 is located in the light output path of the reflected light of the first reflection structure 1213. The first electrochromic film 1212 is used to adjust the transmittance of the third color light ray reflected from the first reflection structure 1213 to the second reflection structure 1211, so as to adjust the light output brightness of the third color light ray emitted from the third sub-pixel region P3.

[0059] Among them, the electrochromic film is a functional layer based on electrochromic (EC) technology. Electrochromic technology refers to the phenomenon that the optical properties (such as reflectivity, transmittance, absorptivity) of a material change reversibly under the action of an external electric field. By controlling the electric field, the transparency or color change of the material is adjusted to achieve dynamic optical regulation.

[0060] In some embodiments, each pixel unit P further includes a fourth sub-pixel region P4, and the fourth sub-pixel region P4 is located on the side of the first sub-pixel region P1 away from the third sub-pixel region P3. Each pixel unit P further includes a first excitation light-emitting unit 114, and the first excitation light-emitting unit 114 is disposed at a position corresponding to the fourth sub-pixel region P4 of the light output layer 11. The first optical path control structure 121 is further used to adjust the light output direction of the third color light ray emitted by the first light-emitting chip 211, so that part of the third color light ray irradiates on the first excitation light-emitting unit 114 to excite the first excitation light-emitting unit 114 to emit white light.

[0061] In this way, the first excitation light-emitting unit 114 is excited by the third color light ray emitted by the first light-emitting chip 211 and emits white light outward, which can improve the light emission brightness of the pixel unit P where it is located.

[0062] In some embodiments, the first optical path control structure 121 further includes a third reflection structure 1214 and a fourth reflection structure 1216.

[0063] Among them, the third reflection structure 1214 is disposed at a position corresponding to the first sub-pixel region P1 of the optical path control layer 12 and is located in the light output path of the light emitted by the first light-emitting chip 211.

[0064] The fourth reflection structure 1216 is disposed at a position corresponding to the fourth sub-pixel region P4 of the optical path control layer 12 and is located in the light exit path of the reflected light of the third reflection structure 1214. The light exit path of the fourth reflection structure 1216 is the path from the optical path control layer 12 to the light exit layer 11 of the fourth sub-pixel region P4.

[0065] Wherein, the first light-emitting chip 211 is further configured to emit third-color light toward the third reflection structure 1214. The third reflection structure 1214 is configured to reflect a part of the third-color light emitted by the first light-emitting chip 211 to the fourth reflection structure 1216. The fourth reflection structure 1216 is configured to reflect the third-color light from the third reflection structure 1214 to irradiate the first excitation light-emitting unit 114.

[0066] In some embodiments, the third reflection structure 1214 and the fourth reflection structure 1216 are planar structures. Wherein, the incident angle of at least part of the third-color light emitted by the first light-emitting chip 211 when irradiating on the reflection surface of the third reflection structure 1214 is greater than 0° and less than 90°. Preferably, the reflection surface of the third reflection structure 1214 is parallel to the reflection surface of the fourth reflection structure 1216. Preferably, the reflection surface of the first reflection structure and the reflection surface of the third reflection structure 1214 may be symmetrically arranged with respect to the center line of the light beam emitted by the first light-emitting chip 211. In other embodiments, the third reflection structure 1214 and the fourth reflection structure 1216 may also be of other shapes, such as arc-shaped structures, which are not limited herein.

[0067] In some embodiments, the first optical path control structure 121 further includes a second electrochromic film 1215. The second electrochromic film 1215 is disposed between the third reflection structure 1214 and the fourth reflection structure 1216, that is, the second electrochromic film 1215 is located in the light exit path of the reflected light of the third reflection structure 1214. The second electrochromic film 1215 is configured to adjust the transmittance of the third-color light reflected from the third reflection structure 1214 to the fourth reflection structure 1216, so as to adjust the light exit brightness of the white light exiting from the fourth sub-pixel region P4.

[0068] In some embodiments, each of the pixel units P further includes a second excitation light-emitting unit 115. The second excitation light-emitting unit 115 is disposed at a position corresponding to the first sub-pixel region P1 of the light-emitting layer 11 and is located between the first organic light-emitting diode 111 and the light path control layer 12. The first reflection structure 1213 is further configured to cause a part of the third-color light emitted by the first light-emitting chip 211 to irradiate the second excitation light-emitting unit 115, so that the second excitation light-emitting unit 115 is excited to emit white light toward the first organic light-emitting diode 111, thereby enhancing the light-emitting brightness of the first-color light emitted from the first sub-pixel region P1.

[0069] As Figure 2 shown, in some embodiments, the first reflection structure 1213 includes a first semi-transparent and semi-reflective film 12131 and a third electrochromic transmissive film 12132.

[0070] Wherein, the first semi-transparent and semi-reflective film 12131 is configured to receive the third-color light emitted by the first light-emitting chip 211, transmit a part of the received third-color light, and reflect another part of the received third-color light to the second reflection structure 1211.

[0071] The third electrochromic transmissive film 12132 is disposed between the first semi-transparent and semi-reflective film 12131 and the second excitation light-emitting unit 115, and is configured to adjust the transmittance of the third-color light transmitted from the first semi-transparent and semi-reflective film 12131 to the second excitation light-emitting unit 115.

[0072] Among them, a semi-transparent and semi-reflective film is a special film deposited on an optical glass or plastic substrate. By controlling the thickness and refractive index of the film layer, an incident light beam can be divided into a reflected light and a transmitted light. The reflectivity and transmittance of this film can be adjusted according to specific requirements. A common design is that the reflectivity and transmittance each account for 50%, but it can also be customized according to application requirements.

[0073] In some embodiments, the structure of the third reflection structure 1214 is the same as that of the first reflection structure 1213.

[0074] Specifically, as Figure 2 shown, the third reflection structure 1214 includes a second semi-transparent and semi-reflective film 12141 and a fourth electrochromic transmissive film 12142.

[0075] Wherein, the second semi-transmissive semi-reflective film 12141 is configured to receive the third-color light emitted by the first light-emitting chip 211, transmit a part of the received third-color light, and reflect the other part of the received third-color light to the fourth reflection structure 1216.

[0076] The fourth electro-optically transmissive film 12142 is disposed between the second semi-transmissive semi-reflective film 12141 and the second excitation light-emitting unit 115, and is configured to adjust the transmittance of the third-color light transmitted from the second semi-transmissive semi-reflective film 12141 to the second excitation light-emitting unit 115.

[0077] Wherein, the first organic light-emitting diode 111 may be doped with a first-color phosphor, and the second organic light-emitting diode 112 may be doped with a second-color phosphor. Thus, the white light emitted by the second excitation light-emitting unit 115 when excited will pass through the first organic light-emitting diode 111 and become the first-color light and be emitted outward. In this way, the light emitted by the second excitation light-emitting unit 115 will be superimposed on the light emitted by the first organic light-emitting diode 111, thereby improving the light-emitting brightness of the first-color light emitted from the first sub-pixel region P1.

[0078] In some embodiments, the light-emitting chip 21 includes a second light-emitting chip 212, and the optical path control structure includes the second optical path control structure 122. Wherein, the structure of the second optical path control structure 122 is the same as the structure of the first optical path control structure 121.

[0079] Specifically, the second optical path control structure 122 includes a fifth reflection structure 1223 and a sixth reflection structure 1221.

[0080] Wherein, the fifth reflection structure 1223 is disposed at a position corresponding to the second sub-pixel region P2 of the optical path control layer 12 and is located in the light-emitting path of the light emitted by the second light-emitting chip 212.

[0081] The sixth reflection structure 1221 shown is disposed at a position corresponding to the third sub-pixel region P3 of the optical path control layer 12 and is located in the light-emitting path of the reflected light of the fifth reflection structure 1223, and the light-emitting path of the sixth reflection structure 1221 is the path from the optical path control layer 12 to the light-emitting layer 11 of the third sub-pixel region P3.

[0082] Wherein, the second light-emitting chip 212 is configured to emit third-color light toward the fifth reflection structure 1223, and the fifth reflection structure 1223 is configured to reflect at least part of the third-color light emitted by the second light-emitting chip 212 to the sixth reflection structure 1221, and the sixth reflection structure 1221 is configured to reflect the third-color light from the fifth reflection structure 1223 so as to emit from the third sub-pixel region P3.

[0083] In some embodiments, the fifth reflection structure 1223 and the sixth reflection structure 1221 are planar structures. Wherein, the incident angle when at least part of the third-color light emitted by the second light-emitting chip 212 irradiates on the reflection surface of the fifth reflection structure 1223 is greater than 0° and less than 90°. Preferably, the reflection surface of the fifth reflection structure 1223 is parallel to the reflection surface of the sixth reflection structure 1221. Preferably, in each pixel unit P, the third sub-pixel P3 is located between the second sub-pixel region P2 and the second sub-pixel region P2. Preferably, the sixth reflection structure 1221 and the second reflection structure 1211 are symmetrically arranged with respect to the center line of the third sub-pixel P3. In other embodiments, the fifth reflection structure 1223 and the sixth reflection structure 1221 may also be of other shapes, such as arc-shaped structures, which are not limited herein.

[0084] In this way, the fifth reflection structure 1223 and the sixth reflection structure 1221 can cooperate to change the exit path of at least part of the third-color light emitted by the second light-emitting chip 212, so that at least part of the third-color light can be emitted outwards from the third sub-pixel region P3.

[0085] In some embodiments, the optical path control structure performs optical path control on the third-color light including adjusting the transmittance of the third-color light. The second optical path control structure 122 further includes a fifth electrochromic film 1222, and the fifth electrochromic film 1222 is disposed between the fifth reflection structure 1223 and the sixth reflection structure 1221, that is, the fifth electrochromic film 1222 is located in the light exit path of the reflected light of the fifth reflection structure 1223. The fifth electrochromic film 1222 is configured to adjust the transmittance of the third-color light reflected from the fifth reflection structure 1223 to the sixth reflection structure 1221, thereby adjusting the light exit brightness of the third-color light emitted from the third sub-pixel region P3.

[0086] In some embodiments, each of the pixel units P further includes a fifth sub-pixel region P5, and the fifth sub-pixel region P5 is located on a side of the second sub-pixel region P2 away from the third sub-pixel region P3. Each of the pixel units P further includes a third excitation light-emitting unit 117, and the third excitation light-emitting unit 117 is disposed at a position corresponding to the fifth sub-pixel region P5 of the light-emitting layer 11. The second optical path control structure 122 is further configured to adjust an emission direction of third-color light emitted by the second light-emitting chip 212, so that part of the third-color light irradiates the third excitation light-emitting unit 117 to excite the third excitation light-emitting unit 117 to emit white light.

[0087] In this way, the third excitation light-emitting unit 117 is excited by the third-color light emitted by the second light-emitting chip 212 and emits white light outward, which can improve the emission brightness of the pixel unit P where it is located.

[0088] In some embodiments, the second optical path control structure 122 further includes a seventh reflection structure 1224 and an eighth reflection structure 1226.

[0089] Among them, the seventh reflection structure 1224 is disposed at a position corresponding to the second sub-pixel region P2 of the optical path control layer 12 and is located in an emission path of light emitted by the second light-emitting chip 212.

[0090] The eighth reflection structure 1226 is disposed at a position corresponding to the fifth sub-pixel region P5 of the optical path control layer 12 and is located in an emission path of reflected light of the seventh reflection structure 1224, and an emission path of the eighth reflection structure 1226 is a path from the optical path control layer 12 to the light-emitting layer 11 for the fifth sub-pixel region P5.

[0091] Among them, the second light-emitting chip 212 is further configured to emit third-color light toward the seventh reflection structure 1224, the seventh reflection structure 1224 is configured to reflect part of the third-color light emitted by the second light-emitting chip 212 to the eighth reflection structure 1226, and the eighth reflection structure 1226 is configured to reflect the third-color light from the seventh reflection structure 1224 to irradiate the third excitation light-emitting unit 117.

[0092] In some embodiments, the seventh reflection structure 1224 and the eighth reflection structure 1226 are planar structures. When at least part of the third-color light emitted by the second light-emitting chip 212 irradiates the reflection surface of the seventh reflection structure 1224, the incident angle is greater than 0° and less than 90°. Preferably, the reflection surface of the seventh reflection structure 1224 is parallel to the reflection surface of the eighth reflection structure 1226. Preferably, the reflection surface of the fifth reflection structure 1223 and the reflection surface of the seventh reflection structure 1224 may be symmetrically arranged with respect to the center line of the light beam emitted by the second light-emitting chip 212. In other embodiments, the seventh reflection structure 1224 and the eighth reflection structure 1226 may also have other shapes, such as arc-shaped structures, which are not limited herein.

[0093] In some embodiments, the second light path control structure 122 further includes a sixth electrochromic film 1225. The sixth electrochromic film 1225 is disposed between the seventh reflection structure 1224 and the eighth reflection structure 1226, that is, the sixth electrochromic film 1225 is located in the light output path of the reflected light of the seventh reflection structure 1224. The sixth electrochromic film 1225 is used to adjust the transmittance of the third-color light reflected by the seventh reflection structure 1224 to the eighth reflection structure 1226, so as to adjust the light output brightness of the white light emitted from the fifth sub-pixel region P5.

[0094] In some embodiments, each pixel unit P further includes a fourth excitation light-emitting unit 116. The fourth excitation light-emitting unit 116 is disposed at a position corresponding to the second sub-pixel region P2 of the light output layer 11 and is located between the second organic light-emitting diode 112 and the light path control layer 12. The fifth reflection structure 1223 is further configured to cause part of the third-color light emitted by the second light-emitting chip 212 to irradiate the fourth excitation light-emitting unit 116, so that the fourth excitation light-emitting unit 116 is excited to emit white light toward the second organic light-emitting diode 112, thereby enhancing the light output brightness of the second-color light emitted from the second sub-pixel region P2.

[0095] Wherein, the structure of the fifth reflection structure 1223 is the same as that of the first reflection structure 1213, and the structure of the seventh reflection structure 1224 is the same as that of the third reflection structure 1214, which will not be elaborated herein.

[0096] Such as Figure 2As shown, in some embodiments, the first optical path control structure 121 and the second optical path control structure 122 may be located on the same layer. The optical path control structure further includes a coated substrate 1201, and the coated substrate 1201 is disposed on the side of the layer where the first optical path control structure 121 and the second optical path control structure 122 are located, away from the light-emitting layer 11.

[0097] Among them, the coated substrate 1201 may be made of a transparent material, such as glass, transparent polyimide (CPI), ultra-thin flexible glass (UTG), and so on.

[0098] In some embodiments, the first excitation light-emitting unit 114, the second excitation light-emitting unit 115, the third excitation light-emitting unit 117, and the fourth excitation light-emitting unit 116 may be located on the same layer, that is, the excitation light-emitting unit formation layer. Each excitation light-emitting unit may include a third-color light-excited phosphor. The working principle of the third-color light-excited phosphor is based on the Stokes shift phenomenon. Specifically, when the third-color light irradiates the phosphor, the electrons in the phosphor absorb the energy of the third-color photons and transition to a higher energy level. Subsequently, when the electrons return from the excited state to the ground state, they will emit photons with lower energy, thereby emitting white light.

[0099] In some embodiments, the light-emitting layer 11 further includes a first diffusion structure 113, a second diffusion structure 118, and a third diffusion structure 119.

[0100] Among them, the first diffusion structure 113 is disposed in the third sub-pixel region P3 and is located in the light-emitting path of the reflected light of the second reflection structure 1211 and the sixth reflection structure 1221. The second diffusion structure 118 is disposed in the fifth sub-pixel region P5 and is located on the light-emitting side of the third excitation light-emitting unit 117. The third diffusion structure 119 is disposed in the fourth sub-pixel region P4 and is located on the light-emitting side of the first excitation light-emitting unit 114.

[0101] The first diffusion structure 113, the second diffusion structure 118, and the third diffusion structure 119 all include diffusion particles for scattering light to improve the brightness uniformity.

[0102] Among them, the first organic light-emitting diode 111, the second organic light-emitting diode 112, the first diffusion structure 113, the second diffusion structure 118, and the third diffusion structure 119 can be located in the same layer, that is, the organic light-emitting diode formation layer. Among them, between the first diffusion structure 113 and the first organic light-emitting diode 111, between the first diffusion structure 113 and the second organic light-emitting diode 112, between the second diffusion structure 118 and the second organic light-emitting diode 112, and between the third diffusion structure 119 and the first organic light-emitting diode 111, they can be separated by pixel partition frame glue, so that interference between different sub-pixel regions can be ensured to be avoided.

[0103] The structures of the first organic light-emitting diode 111 and the second organic light-emitting diode 112 are similar, both being multi-layer structures not shown in the figure. Specifically, the first organic light-emitting diode 111 and the second organic light-emitting diode 112 both include a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. Among them, the color of the light emitted by the organic light-emitting diode is determined by the organic material in the light-emitting layer therein. For example, the light-emitting layer in a red organic light-emitting diode includes a red organic material, and the light-emitting layer in a green organic light-emitting diode includes a green organic material. The structure and light-emitting principle of the organic light-emitting diode belong to the prior art and will not be elaborated here.

[0104] In some embodiments, the light-emitting layer 11 may further include a first transparent conductive layer 1101, a second transparent conductive layer 1102, a third transparent conductive layer 1103, a glass substrate 1104, and a circular polarizing plate 1105.

[0105] Among them, the first transparent conductive layer 1101 is disposed between the optical path control layer 12 and the excitation light-emitting unit formation layer. The first transparent conductive layer 1101 is electrically connected to all the electro-optically transmissive films (including the first electro-optically transmissive film 1212, the second electro-optically transmissive film 1215, the third electro-optically transmissive film 12132, the fourth electro-optically transmissive film 12142, the fifth electro-optically transmissive film 1222, the sixth electro-optically transmissive film 1225, the seventh electro-optically transmissive film 12232, the eighth electro-optically transmissive film 12242) in the optical path control layer 12, and is used to output corresponding electrical signals to each electro-optically transmissive film respectively to control the transmittance of each electro-optically transmissive film respectively.

[0106] Specifically, please refer to Figures 4 to 5 , Figure 4 for Figure 1 the optical path diagram of the display panel shown in the normal display mode; Figure 5 for Figure 1 the optical path diagram of the display panel shown in the high-brightness display mode.

[0107] The display panel 10 includes two operating modes, namely a normal display mode and a highlight display mode. As Figure 4 shown, when the display panel 10 operates in the normal display mode, the first organic light-emitting diode 111 emits first-color light and emits it outward from the first sub-pixel region P1, and the second organic light-emitting diode 112 emits second-color light and emits it outward from the second sub-pixel region P2. The first transparent conductive layer 1101 controls the first electrochromic film 1212 and the fifth electrochromic film 1222 to both operate in a light-transmitting state (i.e., the transmittance is greater than 0), and controls the second electrochromic film 1215, the third electrochromic film 12132, the fourth electrochromic film 12142, the sixth electrochromic film 1225, the seventh electrochromic film 12232, and the eighth electrochromic film 12242 to all operate in a closed state (i.e., the transmittance is equal to 0). At this time, only part of the third-color light emitted by the first light-emitting chip 211 is reflected by the first reflection structure 1213 to the second reflection structure 1211, and then reflected by the second reflection structure 1211 and emitted outward from the third sub-pixel region P3. Only part of the third-color light emitted by the second light-emitting chip 212 is reflected by the fifth reflection structure 1223 to the sixth reflection structure 1221, and then reflected by the sixth reflection structure 1221 and emitted outward from the third sub-pixel region P3.

[0108] At this time, all the excitation light-emitting units cannot receive the third-color light. Thus, the first sub-pixel region P1 and the second sub-pixel region P2 have normal brightness, the fourth sub-pixel region P4 and the fifth sub-pixel region P5 do not emit light, and the brightness of the third sub-pixel region P3 is determined by the transmittances of the first electrochromic film 1212 and the fifth electrochromic film 1222.

[0109] As Figure 5As shown, when the display panel 10 operates in the high-brightness display mode, the first organic light-emitting diode 111 emits first-color light and emits it outward from the first sub-pixel region P1, and the second organic light-emitting diode 112 emits second-color light and emits it outward from the second sub-pixel region P2. The first transparent conductive layer 1101 is used to control the first electrochromic film 1212, the second electrochromic film 1215, the third electrochromic film 12132, the fourth electrochromic film 12142, the fifth electrochromic film 1222, the sixth electrochromic film 1225, the seventh electrochromic film 12232, and the eighth electrochromic film 12242 to all operate in the light-transmitting state (i.e., the transmittance is greater than 0). At this time, the third-color light emitted by the first light-emitting chip 211 is divided into three parts. Among them, the first part is reflected by the first reflection structure 1213 to the second reflection structure 1211, and then reflected by the second reflection structure 1211 and emitted outward from the third sub-pixel region P3. The second part passes through the first reflection structure 1213 and the third reflection structure 1214 and irradiates the second excitation light-emitting unit 115, exciting the second excitation light-emitting unit 115 to emit white light and emit it outward from the first sub-pixel region P1. The third part is reflected by the third reflection structure 1214 to the fourth reflection structure 1216, and then reflected by the fourth reflection structure 1216 to the first excitation light-emitting unit 114, exciting the first excitation light-emitting unit 114 to emit white light and emit it outward from the fourth sub-pixel region P4. The third-color light emitted by the second light-emitting chip 212 is divided into three parts. Among them, the first part is reflected by the fifth reflection structure 1223 to the sixth reflection structure 1221, and then reflected by the sixth reflection structure 1221 and emitted outward from the third sub-pixel region P3. The second part passes through the fifth reflection structure 1223 and the seventh reflection structure 1224 and irradiates the fourth excitation light-emitting unit 116, exciting the fourth excitation light-emitting unit 116 to emit white light and emit it outward from the second sub-pixel region P2. The third part is reflected by the seventh reflection structure 1224 to the eighth reflection structure 1226, and then reflected by the fourth reflection structure 1216 to the third excitation light-emitting unit 117, exciting the third excitation light-emitting unit 117 to emit white light and emit it outward from the fourth sub-pixel region P4.

[0110] At this time, all the excitation light-emitting units receive the third-color light and are activated to emit white light. Thus, the brightness of the first sub-pixel region P1 and the second sub-pixel region P2 is enhanced, the fourth sub-pixel region P4 and the fifth sub-pixel region P5 both emit light, and the brightness of the third sub-pixel region P3 is determined by the transmittances of the first electrochromic film 1212 and the fifth electrochromic film 1222.

[0111] The second transparent conductive layer 1102 is disposed between the excitation light-emitting unit forming layer and the organic light-emitting diode forming layer. The third transparent conductive layer 1103 is disposed on a side of the organic light-emitting diode forming layer away from the excitation light-emitting unit forming layer. The glass substrate 1104 is disposed on a side of the third transparent conductive layer 1103 away from the organic light-emitting diode forming layer. The circular polarizing plate 1105 is disposed on a side of the glass substrate 1104 away from the glass substrate 1104.

[0112] Wherein, the second transparent conductive layer 1102 and the third transparent conductive layer 1103 are configured to output corresponding electrical signals to the first organic light-emitting diode 111 and the second organic light-emitting diode 112, so as to drive the first organic light-emitting diode 111 to emit first-color light and drive the second organic light-emitting diode 112 to emit second-color light. The glass substrate 1104 is configured to protect the organic light-emitting diode forming layer. The circular polarizing plate 1105 converts the light emitted by the display panel 10 into circularly polarized light, reduces the reflection of the light on the surface of the display panel 10, thereby reducing the reflectivity, and enabling the screen to maintain good readability under strong light.

[0113] Please refer to Figure 6 , Figure 6 which is a flowchart of a method for manufacturing a display panel provided by an embodiment of the present application. The present application provides a method for manufacturing a display panel, and the manufacturing method includes the following steps:

[0114] Step S1, forming an optical path control structure on a plating substrate 1201 to obtain an optical path control layer 12;

[0115] Step S2, forming a first organic light-emitting diode 111 and a second organic light-emitting diode 112 on the optical path control layer 12 to obtain a light-emitting layer 11, thereby obtaining a first substrate 1;

[0116] Step S3, forming a light-emitting chip 21 on a chip substrate 201 to obtain a second substrate 2;

[0117] Step S4, aligning and bonding the first substrate 1 and the second substrate 2 to obtain a display panel 10.

[0118] Wherein, the display panel 10 has a plurality of pixel units P formed in an array distribution on the first substrate 1 and the second substrate 2. Each pixel unit P includes at least a first sub-pixel region P1, a second sub-pixel region P2, and a third sub-pixel region P3. Each pixel unit P further includes a first organic light-emitting diode 111, a second organic light-emitting diode 112, a light-emitting chip 21, and an optical path control structure.

[0119] Among them, the first organic light-emitting diode 111 is located in the first sub-pixel region P1 and is used to emit light of a first color.

[0120] The second organic light-emitting diode 112 is located in the second sub-pixel region P2 and is used to emit light of a second color.

[0121] The light-emitting chip 21 is used to emit light of a third color toward the optical path control layer 12.

[0122] The optical path control structure is used to perform optical path control on the third color light when receiving the third color light emitted by the light-emitting chip 21, so that at least part of the third color light reaches the area corresponding to the third sub-pixel region P3 of the light-emitting layer 11 after passing through the optical path control structure and is emitted from the third sub-pixel region P3.

[0123] Please refer to Figures 7a - 7e together with Figures 7a - 7e below, and the manufacturing process of the first substrate 1 will be introduced in detail in combination with

[0124] In some embodiments, forming an optical path control structure on the plated substrate 1201 to obtain the optical path control layer 12 includes:

[0125] Depositing a specific substrate structure using a transparent material 4 at positions corresponding to each pixel unit P on the plated substrate 1201;

[0126] Among them, the specific substrate structure has a first surface a to an eighth surface h. Among them, the first surface a is located in the fourth sub-pixel region P4, the second surface b and the third surface c are located in the first sub-pixel region P1, the fourth surface d and the fifth surface e are located in the third sub-pixel region P3, the sixth surface f and the seventh surface g are located in the second sub-pixel region P2, and the eighth surface h is located in the fifth sub-pixel region P5. The first surface a is parallel to the second surface b and the third surface c, the third surface c and the fourth surface d, the fifth surface e and the sixth surface f, and the seventh surface g and the eighth surface h. The second surface b and the third surface c, the fourth surface d and the fifth surface e, and the sixth surface f and the seventh surface g present an axisymmetric relationship;

[0127] Depositing a semi-transmissive semi-reflective coating and a reflective layer on the second surface b, the third surface c, the sixth surface f, and the seventh surface g of the specific substrate structure to obtain the first semi-transmissive semi-reflective film 12131, the second semi-transmissive semi-reflective film 12141, the third semi-transmissive semi-reflective film 12231, the fourth semi-transmissive semi-reflective film 12241, and to obtain the second reflective structure 1211, the sixth reflective structure 1221, the fourth reflective structure 1216, and the eighth reflective structure 1226;

[0128] At the position between the first side a and the second side b of the specific substrate structure, electrochromic layers are deposited on the second side b, on the third side c, at the position between the third side c and the fourth side d, at the position between the fifth side e and the sixth side f, on the sixth side f, on the seventh side g, and at the position between the seventh side g and the eighth side h, so as to obtain the first electrochromic light-transmissive film 1212, the second electrochromic light-transmissive film 1215, the third electrochromic light-transmissive film 12132, the fourth electrochromic light-transmissive film 12142, the fifth electrochromic light-transmissive film 1222, the sixth electrochromic light-transmissive film 1225, the seventh electrochromic light-transmissive film 12232, and the eighth electrochromic light-transmissive film 12242;

[0129] The light path control layer 12 is obtained by filling the transparent material 4 on the specific substrate structure.

[0130] In some embodiments, forming the first organic light-emitting diode 111 and the second organic light-emitting diode 112 on the light path control layer 12 to obtain the light-emitting layer 11 includes:

[0131] Depositing a transparent conductive material on the upper surface of the light path control layer 12 to obtain the first transparent conductive layer 1101;

[0132] Depositing the transparent material 4 on the upper surface of the first transparent conductive layer 1101 at the position corresponding to the third sub-pixel region P3, and depositing fluorescent materials at the positions corresponding to the first sub-pixel region P1, the second sub-pixel region P2, the fourth sub-pixel region P4, and the fifth sub-pixel region P5 of the first transparent conductive layer 1101, so as to obtain the first excitation light-emitting unit 114, the second excitation light-emitting unit 115, the third excitation light-emitting unit 117, and the fourth excitation light-emitting unit 116, to obtain the excitation light-emitting unit formation layer;

[0133] Depositing a transparent conductive material on the upper surface of the excitation light-emitting unit formation layer to obtain the second transparent conductive layer 1102;

[0134] Forming the first organic light-emitting diode 111, the second organic light-emitting diode 112, the first diffusion structure 113, the second diffusion structure 118, and the third diffusion structure 119 on the upper surface of the second transparent conductive layer 1102 to obtain the organic light-emitting diode formation layer;

[0135] Forming the third transparent conductive layer 1103 on the upper surface of the organic light-emitting diode formation layer;

[0136] Laying the glass substrate 1104 on the upper surface of the third transparent conductive layer 1103;

[0137] The circular polarizer 1105 is attached to the upper surface of the glass substrate 1104 to obtain the light output layer 11 .

[0138] Please also read Figures 8a - 8b , the following combination Figures 8a - 8b , the manufacturing process of the second substrate 2 is introduced in detail.

[0139] In some embodiments, the step of forming the light emitting chip 21 on the chip substrate 201 to obtain the second substrate 2 includes:

[0140] Depositing a transparent conductive material on the chip substrate 201 to obtain a fourth transparent conductive layer 202;

[0141] forming a protective film layer 203 on the upper surface of the fourth transparent conductive layer 202;

[0142] The first light emitting chip 211 and the second light emitting chip 212 are formed on the protective film layer 203 , and isolation columns 3 are formed on the protective film layer 203 at positions where the first light emitting chip 211 and the second light emitting chip 212 are staggered, so as to obtain the second substrate 2 .

[0143] In some embodiments, the step of laminating the first substrate 1 and the second substrate 2 to obtain the display panel 10 includes:

[0144] The first substrate 1 and the second substrate 2 are aligned according to preset alignment marks, and the edges of the first substrate 1 and the second substrate 2 are sealed with a sealant.

[0145] See also Figure 9 The present application further provides a display device 100, which includes a driving circuit 20 and a display panel 10 described in any of the above embodiments. The driving circuit 20 is used to output a control signal to the display panel 10 to control the display panel 10 to display.

[0146] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A display panel, characterized in that, The display panel includes: a first substrate including a light-emitting layer and an optical path control layer arranged in a stacked manner; and a second substrate disposed on one side where the optical path control layer of the first substrate is located; wherein, the display panel has a plurality of pixel units formed on the first substrate and the second substrate and distributed in an array, and each pixel unit at least includes a first sub-pixel region, a second sub-pixel region, and a third sub-pixel region; each pixel unit further includes: a first organic light-emitting diode disposed on the light-emitting layer and located in the first sub-pixel region for emitting first-color light; a second organic light-emitting diode disposed on the light-emitting layer and located in the second sub-pixel region for emitting second-color light; a light-emitting chip disposed on the second substrate for emitting third-color light toward the optical path control layer; and an optical path control structure disposed on the optical path control layer for, when receiving the third-color light emitted by the light-emitting chip, performing optical path control on the third-color light so that at least part of the third-color light is emitted from the third sub-pixel region.

2. The display panel according to claim 1, wherein The optical path control structure performing optical path control on the third-color light includes adjusting the emission direction of the third-color light; the third sub-pixel region in each pixel unit is adjacent to both the first sub-pixel region and the second sub-pixel region; the light-emitting chip includes a first light-emitting chip and / or a second light-emitting chip, the first light-emitting chip is located in the first sub-pixel region, and the second light-emitting chip is located in the second sub-pixel region; The optical path control structure is at least used to adjust the emission direction of the third-color light emitted by the first light-emitting chip and / or the second light-emitting chip, so that at least part of the third-color light is emitted from the third sub-pixel region.

3. The display panel according to claim 2, characterized in that, The light-emitting chip includes a first light-emitting chip, and the optical path control structure includes a first optical path control structure; The first optical path control structure includes: a first reflection structure disposed at a position of the optical path control layer corresponding to the first sub-pixel region and located in the light-emitting path of the light emitted by the first light-emitting chip; and a second reflection structure disposed at a position of the optical path control layer corresponding to the third sub-pixel region and located in the light-emitting path of the reflected light of the first reflection structure, and the light-emitting path of the second reflection structure is the path from the optical path control layer to the light-emitting layer of the third sub-pixel region; wherein, the first light-emitting chip is used to emit third-color light toward the first reflection structure, the first reflection structure is used to reflect at least part of the third-color light emitted by the first light-emitting chip to the second reflection structure, and the second reflection structure is used to reflect the third-color light from the first reflection structure to be emitted from the third sub-pixel region.

4. The display panel according to claim 3, wherein The optical path control structure for controlling the optical path of the third color light further includes adjusting the transmittance of the third color light; the first optical path control structure further includes a first electrochromic light-transmitting film, and the first electrochromic light-transmitting film is disposed between the first reflection structure and the second reflection structure, and the first electrochromic light-transmitting film is used to adjust the transmittance of the third color light reflected from the first reflection structure to the second reflection structure, so as to adjust the light-emitting brightness of the third color light emitted from the third sub-pixel region.

5. The display panel according to claim 3, wherein Each of the pixel units further includes a fourth sub-pixel region, and the fourth sub-pixel region is located on a side of the first sub-pixel region away from the third sub-pixel region; each of the pixel units further includes a first excitation light-emitting unit, and the first excitation light-emitting unit is disposed at a position corresponding to the fourth sub-pixel region of the light-emitting layer; the first optical path control structure is further used to adjust the emission direction of the third color light emitted by the first light-emitting chip, so that part of the third color light irradiates the first excitation light-emitting unit to excite the first excitation light-emitting unit to emit white light.

6. The display panel according to claim 5, wherein The first optical path control structure further includes: a third reflection structure, which is disposed at a position corresponding to the first sub-pixel region of the optical path control layer and is located in the light-emitting path of the light emitted by the first light-emitting chip; and a fourth reflection structure, which is disposed at a position corresponding to the fourth sub-pixel region of the optical path control layer and is located in the light-emitting path of the reflected light of the third reflection structure, and the light-emitting path of the fourth reflection structure is the path of the fourth sub-pixel region from the optical path control layer towards the light-emitting layer; wherein, the first light-emitting chip is further used to emit the third color light towards the third reflection structure, the third reflection structure is used to reflect part of the third color light emitted by the first light-emitting chip to the fourth reflection structure, and the fourth reflection structure is used to reflect the third color light from the third reflection structure to irradiate the first excitation light-emitting unit.

7. The display panel according to claim 6, wherein The first optical path control structure further includes a second electrochromic light-transmitting film, and the second electrochromic light-transmitting film is disposed between the third reflection structure and the fourth reflection structure, and the second electrochromic light-transmitting film is used to adjust the transmittance of the third color light reflected from the third reflection structure to the fourth reflection structure, so as to adjust the light-emitting brightness of the white light emitted from the fourth sub-pixel region.

8. The display panel according to claim 6, wherein Each of the pixel units further includes a second excitation light-emitting unit, and the second excitation light-emitting unit is disposed at a position corresponding to the first sub-pixel region of the light-emitting layer and is located between the first organic light-emitting diode and the optical path control layer; the first reflection structure is further used to make part of the third color light emitted by the first light-emitting chip irradiate the second excitation light-emitting unit, so that the second excitation light-emitting unit is excited to emit white light towards the first organic light-emitting diode, so as to enhance the light-emitting brightness of the first color light emitted from the first sub-pixel region.

9. The display panel according to claim 8, wherein The first reflection structure includes: The first transflective film is configured to receive the third-color light emitted by the first light-emitting chip, transmit a part of the received third-color light, and reflect the other part of the received third-color light to the second reflecting structure; and The third electrochromic film is disposed between the first transflective film and the second excitation light-emitting unit, and is configured to adjust the transmittance of the third-color light transmitted from the first transflective film to the second excitation light-emitting unit.

10. A display device, characterized in that, The display device includes a driving circuit and a display panel according to any one of claims 1 to 9; wherein the driving circuit is configured to output a control signal to the display panel to control the display panel to perform display.

Images