Optical adjustment method of color film layer and display panel

Abstract

The invention provides an optical adjustment method of a color film layer and a display panel, the display panel comprises a light-emitting function layer and the color film layer located on the light-emitting layer, the light-emitting function layer comprises a plurality of light-emitting units arranged at intervals, the color film layer comprises a plurality of color resistors arranged at intervals, and one color resistor and one light-emitting unit are arranged in a counterpoint mode; in one light-emitting unit and one corresponding color resistor, the absolute value of the difference value between the peak value of the transmission spectrum of the color resistor and the peak value of the light-emitting spectrum of the corresponding light-emitting unit is set to be less than or equal to 10 nanometers; the difference value between the half-peak width of the transmission spectrum of the color resistor and the half-peak width of the light-emitting spectrum of the corresponding light-emitting unit is larger than or equal to 10 nanometers, so that most of light rays emitted by the light-emitting functional layer can pass through the color film layer, the light-emitting efficiency of the display panel is improved, and the optical quality and taste of the display panel are improved.

Description

[0001] This application is a divisional application of the invention patent application with the application date of December 16, 2021, the application number of 202111544928.2, and the invention title of "Optical Adjustment Method of Color Film Layer and Display Panel". Technical Field

[0002] This application relates to the field of display technologies, and particularly to an optical adjustment method of a color film layer and a display panel. Background Art

[0003] In an Organic Light-emitting Diode (OLED) display panel, a polarizer can effectively reduce the reflectivity of the panel under strong light, but loses nearly 58% of the light output. For an OLED display panel, this greatly increases its lifespan burden.

[0004] Currently, in existing display panels, the above problem can usually be solved by using a Color Filter (CF) layer to replace the polarizer; a display panel using the color film technology can not only make the display panel thinner and lighter, but also increase the light output rate of the display panel from 42% to 60%, improving the contrast of the display panel.

[0005] However, using a color film layer not only affects the reflectivity of the display panel, but also affects the light output efficiency of the pixel units of the organic light-emitting layer due to its characteristics. Therefore, it is very important to define a spectrum in which the color film layer and the organic light-emitting layer match and meet the reflectivity requirements of the display panel. Summary of the Invention

[0006] Embodiments of this application provide an optical adjustment method of a color film layer and a display panel to improve the light emission efficiency of the display panel and enhance the optical quality and taste of the display panel.

[0007] To achieve the above functions, the technical solutions provided by the embodiments of this application are as follows:

[0008] Embodiments of this application provide a display panel, including:

[0009] A light-emitting functional layer, including a plurality of light-emitting units of different colors; and

[0010] A color film layer, disposed on the light-emitting functional layer, the color film layer including a plurality of color resistors arranged at intervals, and one of the color resistors is disposed opposite to one of the light-emitting units;

[0011] Among them, in one of the light-emitting units and the corresponding color resist, the absolute value of the difference between the peak value of the transmission spectrum of the color resist and the peak value of the emission spectrum of the corresponding light-emitting unit is less than or equal to 10 nanometers, and the transmittance of the color resist ranges from 44.3% to 65%.

[0012] In the display panel provided in the embodiment of the present application, the light-emitting unit includes a blue light-emitting unit, a green light-emitting unit, and a red light-emitting unit;

[0013] Among them, the difference between the full width at half maximum of the transmission spectrum of the color resist and the full width at half maximum of the emission spectrum of the corresponding light-emitting unit is greater than or equal to 10 nanometers.

[0014] In the display panel provided in the embodiment of the present application, the light-emitting functional layer includes a red light-emitting unit, and the color filter layer includes a red color resist disposed opposite to the red light-emitting unit. Among them, the peak wavelength of the transmission spectrum of the red color resist is greater than 600 nanometers.

[0015] In the display panel provided in the embodiment of the present application, the light-emitting functional layer includes a green light-emitting unit, and the color filter layer includes a green color resist disposed opposite to the green light-emitting unit. Among them, the peak wavelength of the transmission spectrum of the green color resist is between 507 nanometers and 547 nanometers.

[0016] In the display panel provided in the embodiment of the present application, the light-emitting functional layer includes a blue light-emitting unit, and the color filter layer includes a blue color resist disposed opposite to the blue light-emitting unit. Among them, the peak wavelength of the transmission spectrum of the blue color resist is between 440 nanometers and 480 nanometers.

[0017] In the display panel provided in the embodiment of the present application, the full width at half maximum value of the color resist is less than 150 nanometers.

[0018] The embodiment of the present application further provides an optical adjustment method for a color filter layer, which is applied to a display panel. The display panel includes a light-emitting functional layer, the color filter layer is disposed on the light-emitting functional layer, the light-emitting functional layer includes a plurality of light-emitting units of different colors, the color filter layer includes a plurality of color resists disposed at intervals, and one color resist is disposed opposite to one light-emitting unit;

[0019] In one of the light-emitting units and the corresponding color resist, the optical adjustment method of the color filter layer includes the following steps:

[0020] Obtain the emission spectrum of the light-emitting unit;

[0021] Determine the transmittance spectrum of the color resistor according to the emission spectrum of the light-emitting unit, so that the range of the emission spectrum of the light-emitting unit is within the range of the transmittance spectrum of the color resistor; wherein, the absolute value of the difference between the peak of the transmittance spectrum of the color resistor and the peak of the corresponding emission spectrum of the light-emitting unit is less than or equal to 10 nanometers, and the transmittance range of the color resistor is 44.3% to 65%.

[0022] In the color filter layer optical adjustment method provided by the embodiments of the present application, the determining the transmittance spectrum of the color resistor according to the emission spectrum of the light-emitting unit includes:

[0023] Set a first threshold and a second threshold;

[0024] Determine the peak of the transmittance spectrum according to the peak of the emission spectrum and the first threshold, wherein the first threshold is 10 nanometers;

[0025] Determine the full width at half maximum of the transmittance spectrum according to the full width at half maximum of the emission spectrum and the second threshold, wherein the second threshold is 10 nanometers;

[0026] Determine the transmittance spectrum according to the peak of the transmittance spectrum and the full width at half maximum of the transmittance spectrum, so that the range of the emission spectrum of the light-emitting unit is within the range of the transmittance spectrum of the color resistor.

[0027] In the color filter layer optical adjustment method provided by the embodiments of the present application, among one light-emitting unit and the corresponding one color resistor, the color filter layer optical adjustment method further includes:

[0028] Obtain the preset rated power consumption of the display panel, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit, and determine the transmittance of the color resistor according to the preset rated power consumption of the display panel, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit.

[0029] In the color filter layer optical adjustment method provided by the embodiments of the present application, the obtaining the preset rated power consumption of the display panel, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit, and determining the transmittance of the color resistor according to the preset rated power consumption of the display panel, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit includes:

[0030] Determine the minimum transmittance of the color resistor according to the preset rated power consumption of the display panel;

[0031] Determine the maximum transmittance of the color resistor according to the reflectivity threshold of the color resistor and the actual reflectivity value of the light-emitting unit.

[0032] In the color film layer optical adjustment method provided by the embodiments of the present application, the minimum transmittance of the color resist is determined according to the following relational expressions (1) and (2):

[0033]

[0034] P1 < M......(2)

[0035] Wherein, T1 is the minimum transmittance of the color resist, K is a constant, P1 is the power consumption of the display panel, and M is the preset rated power consumption of the display panel.

[0036] In the color film layer optical adjustment method provided by the embodiments of the present application, the maximum transmittance of the color resist is determined according to the following relational expressions (3), (4), and (5):

[0037]

[0038] r < R2......(4)

[0039]

[0040] Wherein, T2 is the maximum transmittance of the color resist, r is the reflectivity of the color resist, R1 is the actual reflectivity of the light-emitting unit, T3 is the transmittance of the color resist in a preset wavelength band, S is the human eye visual function, R2 is the reflectivity threshold of the color resist, and F1 is the light-emitting intensity of the light-emitting unit in the preset wavelength band.

[0041] Advantages of the embodiments of the present application: The embodiments of the present application provide an optical adjustment method for a color film layer and a display panel. The display panel includes a light-emitting functional layer and a color film layer located on the light-emitting layer. The light-emitting functional layer includes a plurality of light-emitting units arranged at intervals, and the color film layer includes a plurality of color resists arranged at intervals. One color resist is arranged opposite to one light-emitting unit. By setting the absolute value of the difference between the peak value of the transmittance spectrum of the color resist and the peak value of the light-emitting spectrum of the corresponding light-emitting unit to be less than or equal to 10 nanometers, and the difference between the full width at half maximum of the transmittance spectrum of the color resist and the full width at half maximum of the light-emitting spectrum of the corresponding light-emitting unit to be greater than or equal to 10 nanometers in one light-emitting unit and the corresponding color resist, most of the light emitted by the light-emitting functional layer can pass through the color film layer, thereby improving the light-emitting efficiency of the display panel and enhancing the optical quality and taste of the display panel. Description of the Drawings

[0042] To more clearly illustrate the technical solutions in the embodiments or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0043] Figure 1 It is a schematic structural diagram of an existing display panel;

[0044] Figure 2 It is a schematic structural diagram of the display panel provided by the embodiment of the present application;

[0045] Figure 3 It is a coordinate diagram of the emission spectrum of the light-emitting functional layer and the transmission spectrum of the color filter layer of the display panel provided by the embodiment of the present application;

[0046] Figure 4 It is a comparison diagram of the transmission spectrum of the blue color resist of the color filter layer and the emission spectrum of the blue light-emitting unit of the light-emitting functional layer provided by the embodiment of the present application;

[0047] Figure 5 It is a comparison diagram of the transmission spectrum of the green color resist of the color filter layer and the emission spectrum of the green light-emitting unit of the light-emitting functional layer provided by the embodiment of the present application;

[0048] Figure 6 It is a comparison diagram of the transmission spectrum of the red color resist of the color filter layer and the emission spectrum of the red light-emitting unit of the light-emitting functional layer provided by the embodiment of the present application;

[0049] Figure 7 It is a color separation phenomenon diagram of the display panel 10 when the transmittance of the color resist 111 is 66% provided by the embodiment of the present application;

[0050] Figure 8 It is a color separation phenomenon diagram of the display panel 10 when the transmittance of the color resist 111 is 55% provided by the embodiment of the present application;

[0051] Figure 9 It is a schematic flow diagram of the optical adjustment method of the color filter layer provided by the embodiment of the present application. Detailed implementation manners

[0052] The following will clearly and completely describe the technical solutions in the embodiments of the present application in conjunction with the accompanying 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 skilled in the art without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation words such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; and "inner" and "outer" refer to the outline of the device.

[0053] Please refer to Figure 1 , a schematic structural diagram of an existing display panel.

[0054] The display panel 10 includes a substrate 20, a first metal layer 60, a pixel definition layer 70, an organic light-emitting layer 80, a second metal layer 90, a packaging layer 100, and a polarizer 120 which are stacked; wherein, the polarizer can effectively reduce the reflectivity of the display panel 10 under strong light, but loses nearly 58% of the light output. For the display panel 10, this greatly increases its life burden; currently, in the prior art, the method of replacing the polarizer 120 with a color filter layer (abbreviated as CF) is usually adopted to solve the above problems.

[0055] The color filter layer is usually composed of a red color resist, a green color resist, a blue color resist, and a black matrix. In the display panel, the red color resist, the green color resist, and the blue color resist respectively undertake the light output of the R / G / B sub-pixel units of the corresponding organic light-emitting layer, while the black matrix mainly undertakes the functions of preventing light leakage of the panel and reducing the reflection of the panel.

[0056] However, since the color filter layer is usually disposed on one side of the light output direction of the OLED panel, it not only affects the reflectivity of the display panel, but also affects the light output of the R / G / B sub-pixel units of the organic light-emitting layer due to its spectral characteristics. Therefore, it is very important to define a spectrum in which the R / G / B color resists of the color filter layer match the R / G / B sub-pixels of the organic light-emitting layer and meet the reflectivity requirements of the display panel. Based on this, the embodiments of the present application provide an optical adjustment method for a color filter layer and a display panel to improve the light-emitting efficiency of the display panel and improve the optical quality and taste of the display panel.

[0057] Please refer to Figures 2 to 9, this application provides an optical adjustment method for a color film layer and a display panel. The display panel includes a light-emitting functional layer including a plurality of spaced-apart light-emitting units; and a color film layer disposed on the light-emitting functional layer. The color film layer includes a plurality of spaced-apart color filters, and one color filter is disposed opposite to one light-emitting unit. Among one light-emitting unit and the corresponding color filter, the absolute value of the difference between the peak value of the transmission spectrum of the color filter and the peak value of the emission spectrum of the corresponding light-emitting unit is less than or equal to 10 nanometers, and the difference between the full width at half maximum of the transmission spectrum of the color filter and the full width at half maximum of the emission spectrum of the corresponding light-emitting unit is greater than or equal to 10 nanometers.

[0058] It can be understood that in this application, among one light-emitting unit 800 and the corresponding color filter 111, the absolute value of the difference between the peak value of the transmission spectrum of the color filter 111 and the peak value of the emission spectrum of the corresponding light-emitting unit 800 is less than or equal to 10 nanometers, and the difference between the full width at half maximum of the transmission spectrum of the color filter 111 and the full width at half maximum of the emission spectrum of the corresponding light-emitting unit 800 is greater than or equal to 10 nanometers. Therefore, most of the emitted light from the light-emitting unit 800 can pass through the color film layer 110, thereby improving the light-emitting efficiency of the display panel 10, and further improving the optical quality and taste of the display panel 10.

[0059] The technical solution of this application will now be described in combination with specific embodiments.

[0060] Please refer to Figure 2 and Figure 3 ; where Figure 2 is a schematic structural diagram of the display panel provided by the embodiment of this application; Figure 3 is a coordinate diagram of the emission spectrum of the light-emitting functional layer and the transmission spectrum of the color film layer of the display panel provided by the embodiment of this application.

[0061] This embodiment provides a display panel 10. The display panel 10 includes, but is not limited to, an organic light-emitting diode display panel 10 (Organic Light Emitting Diode OLED), and this embodiment does not make specific limitations in this regard. It should be noted that this embodiment describes the technical solution of this application by taking the display panel 10 as an organic light-emitting diode display panel 10 as an example.

[0062] In this embodiment, the display panel 10 includes a glass substrate 11, a substrate 20, a buffer layer 30, an array substrate 40, a planarization layer 50, a first metal layer 60, a pixel definition layer 70, a light-emitting functional layer 80, a second metal layer 90, a packaging layer 100, and a color film layer 110 that are sequentially stacked.

[0063] The base 20 includes a first substrate 21, a spacer layer 22, and a second substrate 23 that are stacked in sequence; wherein, both the first substrate 21 and the second substrate 23 may include a rigid substrate or a flexible substrate. When both the first substrate 21 and the second substrate 23 are rigid substrates, the material may be metal or glass. When both the first substrate 21 and the second substrate 23 are flexible substrates, the material may include at least one of acrylic resin, methacrylic resin, polyisoprene, vinyl resin, epoxy resin, polyurethane resin, cellulose resin, silicone resin, polyimide resin, and polyamide resin; the material of the spacer layer 22 includes, but is not limited to, water-absorbing materials such as silicon nitride (SiNx) and silicon oxide (SiOx). In this embodiment, the materials of the first substrate 21, the second substrate 23, and the spacer layer 22 are not limited.

[0064] The materials of the first metal layer 60 and the second metal layer 90 both include at least one metal among molybdenum (Mo), aluminum (Al), platinum (Pt), palladium (Pd), silver (Ag), magnesium (Mg), gold (Au), nickel (Ni), neodymium (Nd), iridium (Ir), chromium (Cr), calcium (Ca), titanium (Ti), tantalum (Ta), and tungsten (W). In this embodiment, the materials of the first metal layer 60 and the second metal layer 90 are not specifically limited.

[0065] It should be noted that, in this embodiment, the first metal layer 60 includes a plurality of first electrodes 61 arranged at intervals, the second metal layer 90 includes a second electrode 91, the first electrodes 61 include, but are not limited to, anodes, and the second electrode 91 includes, but is not limited to, a cathode layer. In this embodiment, the first electrode 61 is used as an anode and the second electrode 91 is used as a cathode layer to describe the technical solution of the present application.

[0066] In this embodiment, the pixel definition layer 70 includes a plurality of opening regions 71 that expose part of the electrodes, and the light-emitting functional layer 80 is located within the opening regions 71; specifically, the light-emitting functional layer 80 includes a plurality of sub-pixels 81 of different colors arranged at intervals. One sub-pixel 81 is correspondingly arranged in one opening region 71, and one sub-pixel 81 is correspondingly arranged with one first electrode 61. Among them, the sub-pixels 81 include, but are not limited to, red sub-pixels r, green sub-pixels g, and blue sub-pixels b.

[0067] In this embodiment, the light-emitting functional layer 80 further includes a plurality of spaced-apart light-emitting units 800. Each light-emitting unit 800 includes the first electrode 61, a sub-pixel 81, and the second electrode 91. The color filter layer 110 includes a plurality of spaced-apart color resistors 111 and a black matrix 112. Among them, one color resistor 111 is provided corresponding to one light-emitting unit 800, and the black matrix 112 is located between the color resistors 111 to define the boundaries between the color resistors 111. Further, in order to prevent light leakage between adjacent color resistors 111, the edges of the color resistors 111 are usually overlapped on the black matrix 112.

[0068] Specifically, in one light-emitting unit 800 and the corresponding color resistor 111, the absolute value of the difference between the peak value of the transmission spectrum of the color resistor 111 and the peak value of the emission spectrum of the corresponding light-emitting unit 800 is less than or equal to a first preset value. Preferably, the first preset value is 10 nanometers. The difference between the full width at half maximum of the transmission spectrum of the color resistor 111 and the full width at half maximum of the emission spectrum of the corresponding light-emitting unit 800 is greater than or equal to a second preset value. Preferably, the second preset value is 10 nanometers. Therefore, it can be understood that when the relationship between the transmission spectrum of the color resistor 111 and the emission spectrum of the corresponding light-emitting unit 800 satisfies the above requirements for the peak value and the full width at half maximum, it indicates that the transmission spectrum of the color resistor 111 is relatively close to the emission spectrum of the corresponding light-emitting unit 800, so that most of the light emitted by the light-emitting functional layer 80 can pass through the color filter layer 110, thereby improving the light-emitting efficiency of the display panel 10. It should be noted that Figure 3 herein, the above peak value refers to the peak value of the wavelength on the horizontal axis, and the above full width at half maximum refers to the full width at half maximum of the wavelength on the horizontal axis. At the same time, Figure 3 the ordinate corresponds to the transmittance of the transmission spectrum and the emission intensity of the emission spectrum.

[0069] Further, please refer to Figure 2 , Figure 4 , Figure 5 and Figure 6 ; among them, Figure 4 is a comparison diagram of the transmission spectrum of the blue color resistor of the color filter layer provided in the embodiment of the present application and the emission spectrum of the blue light-emitting unit of the light-emitting functional layer; Figure 5 is a comparison diagram of the transmission spectrum of the green color resistor of the color filter layer provided in the embodiment of the present application and the emission spectrum of the green light-emitting unit of the light-emitting functional layer; Figure 6 is a comparison diagram of the transmission spectrum of the red color resistor of the color filter layer provided in the embodiment of the present application and the emission spectrum of the red light-emitting unit of the light-emitting functional layer. It should be noted that Figure 4 , Figure 5 and Figure 6The values corresponding to the vertical coordinates are all the transmittance of the transmission spectrum and the luminous intensity of the emission spectrum.

[0070] In this embodiment, the light-emitting unit 800 at least includes a red light-emitting unit 810, a green light-emitting unit 820, and a blue light-emitting unit 830. The color filter layer 110 is located above the light-emitting functional layer 80. The color resist 111 at least includes a red color resist 1111, a green color resist 1112, and a blue color resist 1113. The red color resist 1111 is correspondingly arranged with the red light-emitting unit 810, the green color resist 1112 is correspondingly arranged with the light-emitting unit 800, and the blue color resist 1113 is correspondingly arranged with the blue light-emitting unit 830.

[0071] Among them, the positive projection of the red color resist 1111 in the direction perpendicular to the display panel 10 covers the positive projection of the red sub-pixel r in the direction perpendicular to the display panel 10. The positive projection of the green color resist 1112 in the direction perpendicular to the display panel 10 covers the positive projection of the green sub-pixel g in the direction perpendicular to the display panel 10. The positive projection of the blue color resist 1113 in the direction perpendicular to the display panel 10 covers the positive projection of the blue sub-pixel b in the direction perpendicular to the display panel 10, so as to achieve the visual aesthetic effect of the integrated black of the display panel 10.

[0072] In this embodiment, the peak wavelength of the transmission spectrum of the blue color resist 1113 is between 440 nanometers and 480 nanometers.

[0073] The peak wavelength of the transmission spectrum of the green color resist 1112 is between 507 nanometers and 547 nanometers.

[0074] The peak wavelength of the transmission spectrum of the red color resist 1111 is greater than 600 nanometers.

[0075] Among them, the transmittance range of the color resist 111 is 44.3% to 65%, and the full width at half maximum value of the color resist 111 is less than 150 nanometers; specifically, the transmittance range of the blue color resist 1113 is 44.3% to 65%, the transmittance range of the green color resist 1112 is 44.3% to 65%, and the transmittance range of the red color resist 1111 is 44.3% to 65%.

[0076] Please combine Figure 1, It should be noted that in the prior art, in the display panel 10 provided with the polarizer, since the light emitted by the light-emitting functional layer 80 other than the polarizer has a transmittance close to 100% in each film layer of the display panel 10, in the prior art, the transmittance of the display panel 10 to light depends on the polarizer. According to the prior art, the power consumption P of the display panel 10 POL and the transmittance T of the polarizer POL have a product that is a constant K; in this embodiment, the color filter layer 110 is used to replace the polarizer in the existing display panel 10. Since in this embodiment, the light emitted by the light-emitting functional layer 80 other than the color resist 111 of the color filter layer 110 has a transmittance close to 100% in each film layer of the display panel 10, in this embodiment, the transmittance of the display panel 10 depends on the transmittance of the color resist 111. Therefore, there is a situation where the power consumption P of the display panel 10 POL-less and the transmittance T of the color resist 111 POL-less have a product that is a constant K, that is, P POL *T POL＝ P POL-less *T POL-less .

[0077] Continuing from the above, from the formula P POL *T POL =P POL-less *T POL-less it can be seen that in this embodiment, the transmittance T of the color resist 111 POL and the power consumption P of the display panel 10 POL-less are inversely proportional, that is, the larger the transmittance T of the color resist 111 POL , the smaller the power consumption P of the display panel 10 POL-less .

[0078] In the prior art, the transmittance T of the polarizer relative to the light-emitting functional layer 80 POL is 44.3%. In order to reduce the power consumption of the display panel 10, in this embodiment, P POL-less is set to be less than (1 - 32%)P POL . To sum up, in order to ensure the low power consumption of the display panel 10 and improve the transmittance of the display panel 10, in this embodiment, the transmittance range of the color resist 111 is set to be 44.3% to 65%; preferably, the transmittance of the color resist 111 is 58%.

[0079] It should be noted that in this embodiment, P POL-less is set to be less than (1 - 32%)P POL, that is, taking the power consumption of the display panel 10 provided with the color film layer 110 being reduced by 32% compared to the power consumption of the display panel 10 provided with a polarizer as an example only, in this embodiment, the above numerical value can be selected according to the actual situation.

[0080] It can be understood that the greater the transmittance of the color resistor 111, the greater its reflectance, which will cause an increase in the reflectance of the display panel 10. When external light irradiates the color film layer 110, the external light will undergo specular reflection on the color resistor 111. When the display panel 10 is displaying (that is, when the light-emitting functional layer 80 emits light), the light reflected by the color resistor 111 layer will be mixed with the light emitted by the organic light-emitting unit 800, resulting in a color shift phenomenon.

[0081] Please refer to Figure 7 and Figure 8 , where Figure 7 is a diagram of the color separation phenomenon of the display panel when the transmittance of the color resistor is 66% provided by an embodiment of the present application; Figure 8 is a diagram of the color separation phenomenon of the display panel 10 when the transmittance of the color resistor is 58% provided by an embodiment of the present application.

[0082] As Figure 7 shown, when the transmittance of the color resistor 111 is not within 44.3% to 65%, there is a relatively obvious chromatic dispersion phenomenon in the display panel 10; as Figure 8 shown, when the transmittance of the color resistor 111 is within 44.3% to 65%, the color separation phenomenon of the display panel 10 is effectively improved; at the same time, since the transmittance range of the color resistor 111 is 44.3% to 65%, the reflectance of the color resistor 111 is not large, thereby reducing the reflectance of external light and improving the contrast of the display panel 10.

[0083] Please refer to Figure 2 , Figure 3 and Figure 9 ; where Figure 9 is a schematic flowchart of the optical adjustment method of the color film layer provided by an embodiment of the present application.

[0084] This embodiment provides an optical adjustment method for a color film layer, which is applied to the display panel 10. The display panel 10 includes a light-emitting functional layer 80, the color film layer 110 is disposed on the light-emitting functional layer 80, the light-emitting functional layer 80 includes a plurality of spaced-apart light-emitting units 800, the color film layer 110 includes a plurality of spaced-apart color resistors 111, and one color resistor 111 is disposed opposite to one light-emitting unit 800.

[0085] In one of the light-emitting units 800 and a corresponding color resist 111, the method for optically adjusting the color filter layer 110 includes the following steps:

[0086] Step S10: Obtain the emission spectrum of the light-emitting unit 800.

[0087] It should be noted that the emission spectrum of the light-emitting unit 800 can be directly measured by existing equipment, and the specific type of equipment selected in this embodiment is not specifically limited.

[0088] Step S20: Set a first threshold and a second threshold.

[0089] Step S30: Determine the peak of the transmission spectrum according to the peak of the emission spectrum and the first threshold, where the first threshold is 10 nanometers.

[0090] Furthermore, in step S30, the absolute value of the difference between the peak of the transmission spectrum of the color resist 111 and the peak of the emission spectrum of the corresponding light-emitting unit 800 is less than or equal to 10 nanometers.

[0091] Step S40: Determine the full width at half maximum (FWHM) of the transmission spectrum according to the FWHM of the emission spectrum and the second threshold, where the second threshold is 10 nanometers.

[0092] Furthermore, in step S40, the difference between the FWHM of the transmission spectrum of the color resist 111 and the FWHM of the emission spectrum of the corresponding light-emitting unit 800 is greater than or equal to 10 nanometers.

[0093] Step S50: Determine the transmission spectrum according to the peak of the transmission spectrum and the FWHM of the transmission spectrum, so that the range of the emission spectrum of the light-emitting unit is within the range of the transmission spectrum of the color resist.

[0094] It can be understood that in one of the light-emitting units 800 and a corresponding color resist 111, when the relationship between the transmission spectrum of the color resist 111 and the emission spectrum of the corresponding light-emitting unit 800 meets the above requirements for the peak and FWHM, it indicates that the transmission spectrum of the color resist 111 is relatively close to the emission spectrum of the corresponding light-emitting unit 800, so that most of the light emitted by the light-emitting functional layer 80 can pass through the color filter layer 110, thereby improving the light-emitting efficiency of the display panel 10.

[0095] Furthermore, in one of the light-emitting units 800 and a corresponding color resist 111, the method for optically adjusting the color filter layer 110 further includes:

[0096] Step S60: Obtain the preset rated power consumption of the display panel 10, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit, and determine the transmittance of the color resistor according to the preset rated power consumption of the display panel 10, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit.

[0097] It can be understood that in the prior art, in the display panel 10 provided with the polarizer, since the transmittance of the light emitted by the light-emitting functional layer 80 in each film layer of the display panel 10 except the polarizer is close to 100%, in the prior art, the transmittance of the display panel 10 to light depends on the polarizer. According to the prior art, the power consumption P of the display panel 10 POL and the transmittance T of the polarizer POL has a product that is a constant K; in this embodiment, the color film layer 110 is used to replace the polarizer in the existing display panel 10. Since in this embodiment, the transmittance of the light emitted by the light-emitting functional layer 80 in each film layer of the display panel 10 except the color resistor 111 of the color film layer 110 is close to 100%, in this embodiment, the transmittance of the display panel 10 depends on the transmittance of the color resistor 111. Therefore, there is a situation where the power consumption P of the display panel 10 POL-less and the transmittance T of the color resistor 111 POL-less has a product that is a constant K, that is, P POL *T POL = P POL-less *T POL-less .

[0098] Continuing from the above, from the formula P POL *T POL = P POL-less *T POL-less it can be seen that in this embodiment, the transmittance T of the color resistor 111 POL is inversely proportional to the power consumption P of the display panel 10 POL-less , that is, the larger the transmittance T of the color resistor 111 POL , the smaller the power consumption P of the display panel 10 POL-less ; at the same time, the larger the transmittance of the color resistor 111, the larger its reflectivity will be, resulting in an increase in the reflectivity of the display panel 10. When external light irradiates the color film layer 110, the external light will undergo specular reflection on the color resistor 111. When the display panel 10 is displaying (that is, when the light-emitting functional layer 80 emits light), the light reflected by the color resistor 111 layer will be mixed with the light emitted by the organic light-emitting unit 800, resulting in a color shift phenomenon.

[0099] Therefore, this embodiment determines the transmittance of the color resist according to the preset rated power consumption of the display panel 10 , the reflectance threshold of the color resist, and the actual reflectance value of the light-emitting unit.

[0100] Specifically, the step S60 includes the following steps:

[0101] Step S61 : determining the minimum transmittance of the color resistance according to the preset rated power consumption of the display panel 10 .

[0102] In this embodiment, the step S61 includes: determining the minimum transmittance of the color resist according to the following equations (1) and (2):

[0103]

[0104] P1<M......(2)

[0105] Wherein, T1 is the minimum transmittance of the color resist 111 , K is a constant, P1 is the power consumption of the display panel 10 , and M is the preset rated power consumption of the display panel 10 .

[0106] It should be noted that, from the above embodiments, the transmittance T of the color resist 111 is POL The power consumption P of the display panel 10 POL-less is inversely proportional, that is, the transmittance T of the color resist 111 POL The larger the power consumption P of the display panel 10 is, POL-less The smaller it is, and in actual situations, the display panel 10 has a preset rated power consumption. Therefore, this embodiment limits the minimum transmittance T1 of the color resistance by setting the size of the preset rated power consumption M of the display panel 10; it can be understood that in this embodiment, there is no specific restriction on the size of the preset rated power consumption M of the display panel 10, and its value can be set according to actual conditions.

[0107] Step S62: Determine the maximum transmittance of the color resist according to the following equations (3), (4) and (5):

[0108]

[0109] r<R2......(4)

[0110]

[0111] Wherein, T2 is the maximum transmittance of the color resistor 111, r is the reflectance of the color resistor 111, R1 is the actual reflectance of the light-emitting unit 800, T3 is the transmittance of the color resistor 111 in a preset wavelength band, S is the human eye visual function, R2 is the reflectance threshold of the color resistor 111, and F1 is the light-emitting intensity of the light-emitting unit 800 in the preset wavelength band.

[0112] It should be noted that the light-emitting intensity F1 of the light-emitting unit 800 in the preset wavelength band can be directly measured by existing equipment, and this embodiment does not specifically limit the type of equipment selected; the human eye visual function S refers to the fact that the human eye has different sensitivities to light of different wavelengths within 380 nm to 780 nm, which is also called the visual sensitivity characteristic of the human eye.

[0113] As can be seen from the above embodiments, the greater the transmittance of the color resistor 111, the greater its reflectance will be, resulting in an increase in the reflectance of the display panel 10. When external light irradiates the color filter layer 110, specular reflection will occur on the color resistor 111. When the display panel 10 is displaying (i.e., when the light-emitting functional layer 80 emits light), the light reflected by the color resistor 111 layer will be mixed with the light emitted by the organic light-emitting unit 800, resulting in a color shift phenomenon.

[0114] Therefore, in this embodiment, by defining the reflectance threshold R2 of the color resistor 111, the transmittance T3 of the color resistor 111 in a preset wavelength band is obtained, and the maximum transmittance T2 of the color resistor is calculated from the transmittance T3 of the color resistor 111 in a preset wavelength band and the light-emitting intensity F1 of the light-emitting unit 800 in the preset wavelength band.

[0115] In this embodiment, the transmittance range of the color resistor is determined to be 44.3% to 65% according to the minimum transmittance and the maximum transmittance of the color resistor 111.

[0116] It should be noted that in this embodiment, the light-emitting unit 800 at least includes a red light-emitting unit 810, a green light-emitting unit 820, and a blue light-emitting unit 830. The color filter layer 110 is located above the light-emitting functional layer 80. The color resistor 111 at least includes a red color resistor 1111, a green color resistor 1112, and a blue color resistor 1113. The red color resistor 1111 is correspondingly arranged with the red light-emitting unit 810, the green color resistor 1112 is correspondingly arranged with the light-emitting unit 800, and the blue color resistor 1113 is correspondingly arranged with the blue light-emitting unit 830. Among them, the transmittance ranges of the red color resistor 1111, the green color resistor 1112, and the blue color resistor 1113 can all be calculated by the above method, and this embodiment will not elaborate on this.

[0117] This embodiment further provides a mobile terminal, which includes a terminal body and the display panel described in any of the above embodiments, and the terminal body and the display panel are combined into one body.

[0118] It can be understood that the display panel 10 has been described in detail in the above embodiments, and will not be repeated here.

[0119] In specific applications, the mobile terminal can be the display screen of devices such as smart phones, tablet computers, laptop computers, smart bracelets, smart watches, smart glasses, smart helmets, desktop computers, smart TVs or digital cameras, and can even be applied to electronic devices with flexible display screens.

[0120] In summary, the present application provides an optical adjustment method for a color film layer and a display panel. The display panel includes a light-emitting functional layer and a color film layer located on the light-emitting layer. The light-emitting functional layer includes a plurality of spaced-apart light-emitting units. The color film layer includes a plurality of spaced-apart color resistors. One color resistor is disposed opposite to one light-emitting unit. In the present application, by setting the absolute value of the difference between the peak value of the transmission spectrum of the color resistor and the peak value of the emission spectrum of the corresponding light-emitting unit to be less than or equal to 10 nanometers, and the difference between the full width at half maximum of the transmission spectrum of the color resistor and the full width at half maximum of the emission spectrum of the corresponding light-emitting unit to be greater than or equal to 10 nanometers in one light-emitting unit and the corresponding color resistor, most of the light emitted by the light-emitting functional layer can pass through the color film layer, thereby improving the light-emitting efficiency of the display panel and enhancing the optical quality and taste of the display panel.

[0121] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0122] The above has introduced in detail an optical adjustment method for a color film layer and a display panel provided by the embodiments of the present application. Specific examples are used in this article to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only used to help understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display panel, characterized in that, Comprising: A light-emitting functional layer, including a plurality of light-emitting units of different colors; And A color filter layer disposed on the light-emitting functional layer, the color filter layer including a plurality of color resistors arranged at intervals, and one of the color resistors is disposed opposite to one of the light-emitting units; Wherein, in one of the light-emitting units and the corresponding color resistor, the absolute value of the difference between the peak value of the transmission spectrum of the color resistor and the peak value of the emission spectrum of the corresponding light-emitting unit is less than or equal to 10 nanometers, and the transmittance of the color resistor ranges from 44.3% to 65%.

2. The display panel according to claim 1, wherein The light-emitting units include blue light-emitting units, green light-emitting units and red light-emitting units; Wherein, the difference between the full width at half maximum of the transmission spectrum of the color resistor and the full width at half maximum of the emission spectrum of the corresponding light-emitting unit is greater than or equal to 10 nanometers.

3. The display panel according to claim 2, wherein The color filter layer includes a red color resistor disposed opposite to the red light-emitting unit, wherein the peak wavelength of the transmission spectrum of the red color resistor is greater than 600 nanometers.

4. The display panel according to claim 2, wherein The color filter layer includes a green color resistor disposed opposite to the green light-emitting unit, wherein the peak wavelength of the transmission spectrum of the green color resistor is between 507 nanometers and 547 nanometers.

5. The display panel according to claim 2, characterized in that, The color filter layer includes a blue color resistor disposed opposite to the blue light-emitting unit, wherein the peak wavelength of the transmission spectrum of the blue color resistor is between 440 nanometers and 480 nanometers.

6. The display panel according to claim 1, wherein The full width at half maximum value of the color resistor is less than 150 nanometers.

7. An optical adjustment method for a color film layer, characterized in that, Applied to a display panel, the display panel includes a light-emitting functional layer, the color filter layer is disposed on the light-emitting functional layer, the light-emitting functional layer includes a plurality of light-emitting units of different colors, the color filter layer includes a plurality of color resistors arranged at intervals, and one of the color resistors is disposed opposite to one of the light-emitting units; In one of the light-emitting units and the corresponding color resistor, the optical adjustment method of the color filter layer includes the following steps: Obtain the emission spectrum of the light-emitting unit; Determine the transmission spectrum of the color resistor according to the emission spectrum of the light-emitting unit, so that the range of the emission spectrum of the light-emitting unit is located within the range of the transmission spectrum of the color resistor; wherein, the absolute value of the difference between the peak value of the transmission spectrum of the color resistor and the peak value of the emission spectrum of the corresponding light-emitting unit is less than or equal to 10 nanometers, and the transmittance of the color resistor ranges from 44.3% to 65%.

8. The optical adjustment method of the color film layer according to claim 7, characterized in that The determining the transmission spectrum of the color resistor according to the emission spectrum of the light-emitting unit includes: Set a first threshold and a second threshold; Determine the peak value of the transmission spectrum according to the peak value of the emission spectrum and the first threshold, wherein the first threshold is 10 nanometers; Determine the full width at half maximum of the transmission spectrum according to the full width at half maximum of the emission spectrum and the second threshold, wherein the second threshold is 10 nanometers; Determine the transmission spectrum according to the peak value of the transmission spectrum and the full width at half maximum of the transmission spectrum, so that the range of the emission spectrum of the light-emitting unit is located within the range of the transmission spectrum of the color resistor.

9. The optical adjustment method of the color film layer according to claim 7, characterized in that, In one of the light-emitting units and the corresponding color resistor, the optical adjustment method of the color filter layer further includes: Obtain the preset rated power consumption of the display panel, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit, and determine the transmittance of the color resistor according to the preset rated power consumption of the display panel, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit.

10. The optical adjustment method of the color film layer according to claim 9, characterized in that, The obtaining the preset rated power consumption of the display panel, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit, and determining the transmittance of the color resistor according to the preset rated power consumption of the display panel, the reflectivity threshold of the color resistor, and the actual reflectivity value of the light-emitting unit includes: Determine the minimum transmittance of the color resistor according to the preset rated power consumption of the display panel; Determine the maximum transmittance of the color resistor according to the reflectivity threshold of the color resistor and the actual reflectivity value of the light-emitting unit.

11. The optical adjustment method of the color film layer according to claim 10, characterized in that, Determine the minimum transmittance of the color resistor according to the following relational expressions (1) and (2): P1<M......(2) Wherein, T1 is the minimum transmittance of the color resistor, K is a constant, P1 is the power consumption of the display panel, and M is the preset rated power consumption of the display panel.

12. The optical adjustment method of the color film layer according to claim 10, wherein, Determine the maximum transmittance of the color resistor according to the following relational expressions (3), (4) and (5): r＜R2......(4) Wherein, T2 is the maximum transmittance of the color resistor, r is the reflectivity of the color resistor, R1 is the actual reflectivity of the light-emitting unit, T3 is the transmittance of the color resistor in a preset wavelength band, S is the human eye visual function, R2 is the reflectivity threshold of the color resistor, and F1 is the light-emitting intensity of the light-emitting unit in the preset wavelength band.

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