Calculation method and simulation device for luminescence spectrum of display panel

Abstract

The invention relates to a calculation method for a luminescence spectrum of a display panel and a simulation device. The calculation method comprises the following steps: providing a display panel; the first width of the first sub-part in the first direction, the second width of the second sub-part in the first direction, the third width of the third sub-part in the first direction and the shading width of the black matrix to the adjacent light-emitting part are obtained, and the first direction is parallel to the array substrate; acquiring a spectrum calculation factor according to the shading width, the first width, the second width and the third width; according to the first light-emitting spectrum of the first sub-part, the second light-emitting spectrum of the second sub-part, the third light-emitting spectrum of the third sub-part and a spectrum calculation factor, obtaining a light-emitting spectrum of the display panel; the display panel can improve the phenomenon that the calculation result of the luminescence spectrum is not accurate due to the uneven thickness of the luminescence part, and improves the calculation accuracy of the luminescence spectrum of the display panel.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a calculation method and a simulation device for a light emitting spectrum of a display panel. Background Art

[0002] Compared with liquid crystal display (LCD) panels, organic light emitting diode (OLED) display panels have a series of advantages such as high brightness, full viewing angle, and flexible display, and have been widely used in the display field.

[0003] At present, the luminous spectrum of the IJP OLED display panel can be simulated by optical simulation software. However, when the luminous functional layer in the OLED is printed in the pixel opening, the film layer will have uneven thickness. For example, the thickness of the film layer at the edge of the pixel opening is greater than the thickness of the film layer in the middle, and the luminous intensities of luminous functional layers of different thicknesses are different, which leads to inaccurate luminous spectrum results obtained by existing simulation software. Summary of the invention

[0004] The embodiments of the present application provide a method for calculating the light emitting spectrum of a display panel and a simulation device, which can improve the accuracy of the method for calculating the light emitting spectrum of the display panel.

[0005] The embodiment of the present application provides a method for calculating the light emission spectrum of a display panel, which includes:

[0006] A display panel is provided, the display panel comprising a plurality of light-emitting portions and a black matrix disposed on one side of the light-emitting portions, each of the light-emitting portions comprising a first sub-portion, a second sub-portion connected to the first sub-portion, and a third sub-portion located on a side of the second sub-portion away from the first sub-portion, wherein the thickness of the first sub-portion is smaller than the thickness of the second sub-portion, and the thickness of the second sub-portion is smaller than the thickness of the third sub-portion;

[0007] Acquire a first width of the first sub-section along a first direction, a second width of the second sub-section along the first direction, a third width of the third sub-section along the first direction, and a light shielding width of the black matrix to the adjacent light-emitting sections, wherein the first direction is parallel to the array substrate;

[0008] Acquire a spectrum calculation factor according to the shading width, the first width, the second width, and the third width;

[0009] The light emission spectrum of the display panel is acquired according to the first light emission spectrum of the first sub-section, the second light emission spectrum of the second sub-section, the third light emission spectrum of the third sub-section, and the spectrum calculation factor.

[0010] In one embodiment of the present application, in the step of providing the display panel, the display panel further includes:

[0011] An array substrate;

[0012] A cover plate, arranged opposite to the array substrate, wherein the plurality of light emitting portions are located on a side of the array substrate close to the cover plate;

[0013] A retaining wall is arranged on a side of the array substrate close to the cover plate, and the retaining wall is located between adjacent light-emitting parts;

[0014] a color filter layer, arranged between the cover plate and the light-emitting part, the color filter layer comprising a plurality of color resist blocks arranged corresponding to the plurality of light-emitting parts and the black matrix located between adjacent color resist blocks, the orthographic projection of the black matrix on the array substrate being located between the orthographic projections of the plurality of light-emitting parts on the array substrate;

[0015] The encapsulation layer is arranged between the plurality of light-emitting parts and the color filter layer.

[0016] In an embodiment of the present application, the step of obtaining a first width of the first sub-section along the first direction, a second width of the second sub-section along the first direction, a third width of the third sub-section along the first direction, and a light shielding width of the black matrix to the adjacent light-emitting section includes:

[0017] At a preset viewing angle, the calculation formula for the shading width is:

[0018] w=h1TanA+h2TanB-(w1-w2) / 2;

[0019] A = arcsin[(n3sinC) / n1];

[0020] B = arcsin[(n3sinC) / n2];

[0021] Among them, w is the shading width, h1 is the distance between the light-emitting part and the color resist block, h2 is the thickness of the color resist block, w1 is the width of the baffle along the first direction, w2 is the width of the black matrix along the first direction, n1 is the refractive index of the encapsulation layer, n2 is the refractive index of the color resist block, n3 is the refractive index of air, A is the incident angle of the first light seen at the preset viewing angle when the encapsulation layer enters the color resist block, B is the incident angle of the first light when the color resist block enters the cover plate, and C is the preset viewing angle.

[0022] In an embodiment of the present application, when the shading width is smaller than the third width, the step of acquiring a spectrum calculation factor according to the shading width, the first width, the second width and the third width includes:

[0023] The calculation formula of the spectrum calculation factor is:

[0024] r1=w / w0;

[0025] Wherein, r1 is a spectrum calculation factor, and w0 is a width of the light-emitting portion along the first direction.

[0026] In one embodiment of the present application, the step of deriving the light emission spectrum of the light emitting portion according to the first light emission spectrum of the first sub-portion, the second light emission spectrum of the second sub-portion, the third light emission spectrum of the third sub-portion and the spectrum calculation factor comprises:

[0027] The calculation formula of the luminescence spectrum at the preset viewing angle is:

[0028] S = S1 + S2 + S3 × r1;

[0029] Among them, S is the luminescence spectrum, S1 is the first luminescence spectrum, S2 is the second luminescence spectrum, and S3 is the third luminescence spectrum.

[0030] In one embodiment of the present application, when the shading width is greater than the third width and less than the sum of the second width and the third width, the step of obtaining a spectrum calculation factor according to the shading width, the first width, the second width and the third width includes:

[0031] The calculation formula of the spectrum calculation factor is:

[0032] r2=(ww 03 ) / w 02 ;

[0033] Among them, r2 is the spectrum calculation factor, w 02 is the second width, w 03is the third width.

[0034] In one embodiment of the present application, the step of deriving the light emission spectrum of the light emitting portion according to the first light emission spectrum of the first sub-portion, the second light emission spectrum of the second sub-portion, the third light emission spectrum of the third sub-portion and the spectrum calculation factor comprises:

[0035] The calculation formula of the luminescence spectrum at the preset viewing angle is:

[0036] S = S1 + S2 × r2;

[0037] Wherein, S is the luminescence spectrum, S1 is the first luminescence spectrum, and S2 is the second luminescence spectrum.

[0038] In one embodiment of the present application, when the shading width is greater than the sum of the second width and the third width, and less than the sum of the first width, the second width, and the third width, the step of obtaining a spectrum calculation factor according to the shading width, the first width, the second width, and the third width includes:

[0039] The calculation formula of the spectrum calculation factor is:

[0040] r3=(ww 02 -w 03 ) / w 01 ;

[0041] Among them, r3 is the spectrum calculation factor, w 01 is the first width, w 02 is the second width, w 03 is the third width.

[0042] In one embodiment of the present application, the step of deriving the light emission spectrum of the light emitting portion according to the first light emission spectrum of the first sub-portion, the second light emission spectrum of the second sub-portion, the third light emission spectrum of the third sub-portion and the spectrum calculation factor comprises:

[0043] The calculation formula of the luminescence spectrum at the preset viewing angle is:

[0044] S = S1r3;

[0045] Wherein, S is the luminescence spectrum, and S1 is the first luminescence spectrum.

[0046] According to the above-mentioned purpose of the present application, an embodiment of the present application further provides a simulation device, which is used to calculate the light-emitting spectrum of the display panel by using the calculation method of the light-emitting spectrum of the display panel.

[0047] The present application provides a calculation method and simulation device for the luminous spectrum of a display panel, which improves the phenomenon of inaccurate calculation results of the luminous spectrum due to uneven thickness of the luminous portion, and improves the calculation accuracy of the luminous spectrum of the display panel by dividing the luminous portion of the display panel according to different thicknesses and calculating the luminous spectrum of the luminous portion according to different thickness areas and shading widths.

[0048] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application, and those skilled in the art can obtain other drawings based on these drawings without creative work.

[0050] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same figure numbers represent the same parts in the following description.

[0051] Figure 1 A flow chart of a method for calculating the light emission spectrum of a display panel provided in an embodiment of the present application;

[0052] Figure 2 A schematic diagram of a structure of a light-emitting portion in a display panel provided in an embodiment of the present application;

[0053] Figure 3 A schematic diagram of the structure of a display panel provided in an embodiment of the present application;

[0054] Figure 4 A schematic diagram of an equivalent film layer of the first sub-section of the light-emitting section provided in an embodiment of the present application;

[0055] Figure 5 A schematic diagram of an equivalent film layer of a second sub-section in a light-emitting section provided in an embodiment of the present application;

[0056] Figure 6 A schematic diagram of an equivalent film layer of the third sub-section in the light-emitting section provided in an embodiment of the present application;

[0057] Figure 7 A simulation curve diagram of the luminescence spectrum provided in the embodiment of the present application;

[0058] Figure 8 A brightness viewing angle curve diagram obtained by the calculation method of the light emission spectrum of the display panel provided in an embodiment of the present application;

[0059] Fig. 9A graph showing the measured brightness and viewing angle of the display panel provided in an embodiment of the present application;

[0060] Fig.10 A chromaticity viewing angle curve diagram obtained by the calculation method of the light emission spectrum of the display panel provided in the embodiment of the present application;

[0061] Fig.11 This is a graph of the measured chromaticity viewing angle curve of the display panel provided in an embodiment of the present application.

[0062] Description of reference numerals:

[0063] 11. array substrate; 12. cover plate;

[0064] 21, light-emitting part; 211, first sublayer; 212, second sublayer; 213, third sublayer; 201, first subsection; 202, second subsection; 203, third subsection; 22, retaining wall;

[0065] 30. Color filter layer; 31. Color block; 32. Black matrix;

[0066] 40. Encapsulation layer. DETAILED DESCRIPTION

[0067] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0068] Please refer to Figure 1 , an embodiment of the present application provides a method for calculating a light emitting spectrum of a display panel, the method for calculating a light emitting spectrum of a display panel comprising:

[0069] A display panel is provided, the display panel comprising a plurality of light-emitting portions and a black matrix disposed on one side of the light-emitting portions, each of the light-emitting portions comprising a first sub-portion, a second sub-portion connected to the first sub-portion, and a third sub-portion located on a side of the second sub-portion away from the first sub-portion, wherein the thickness of the first sub-portion is smaller than the thickness of the second sub-portion, and the thickness of the second sub-portion is smaller than the thickness of the third sub-portion;

[0070] Acquire a first width of the first sub-section along a first direction, a second width of the second sub-section along the first direction, a third width of the third sub-section along the first direction, and a light shielding width of the black matrix to the adjacent light-emitting sections, wherein the first direction is parallel to the array substrate;

[0071] Acquire a spectrum calculation factor according to the shading width, the first width, the second width, and the third width;

[0072] The light emission spectrum of the display panel is acquired according to the first light emission spectrum of the first sub-section, the second light emission spectrum of the second sub-section, the third light emission spectrum of the third sub-section, and the spectrum calculation factor.

[0073] During the implementation and application process, the embodiment of the present application divides the light-emitting part of the display panel according to different thicknesses, and calculates the light-emitting spectrum of the light-emitting part according to different thickness areas and shading widths. Compared with the existing simulation algorithm of the light-emitting spectrum of the display panel, the existing simulation algorithm only considers the shading effect of the black matrix on the light-emitting part, but does not consider the uneven thickness of the light-emitting part itself. Therefore, the embodiment of the present application can improve the phenomenon of inaccurate calculation results of the light-emitting spectrum caused by the uneven thickness of the light-emitting part, and improve the calculation accuracy of the light-emitting spectrum of the display panel.

[0074] Specifically, please combine Figure 1 , Figure 2 as well as Figure 3 , the method for calculating the light emission spectrum of the display panel includes:

[0075] S10. Provide a display panel, wherein the display panel includes a plurality of light-emitting portions 21 and a black matrix 32 disposed on one side of the light-emitting portion 21, wherein each of the light-emitting portions 21 includes a first sub-portion 201, a second sub-portion 202 connected to the first sub-portion 201, and a third sub-portion 203 disposed on a side of the second sub-portion 202 away from the first sub-portion 201, wherein the thickness of the first sub-portion 201 is smaller than the thickness of the second sub-portion 202, and the thickness of the second sub-portion 202 is smaller than the thickness of the third sub-portion 203.

[0076] S20, obtaining a first width of the first sub-section 201 along a first direction X, a second width of the second sub-section 202 along the first direction X, a third width of the third sub-section 203 along the first direction X, and a shading width of the black matrix 32 to adjacent light-emitting sections 21, wherein the first direction X is parallel to the array substrate 11.

[0077] S30, obtaining a spectrum calculation factor according to the shading width, the first width, the second width, and the third width.

[0078] S40 , acquiring a light emission spectrum of the display panel according to the first light emission spectrum of the first subsection 201 , the second light emission spectrum of the second subsection 202 , the third light emission spectrum of the third subsection 203 , and the spectrum calculation factor.

[0079] Specifically, in step S10, the display panel is provided.

[0080] In some embodiments, the display panel includes an array substrate 11 and a cover plate 12 arranged opposite to each other, a plurality of the light-emitting portions 21, a baffle 22 and a color film layer 30; wherein, the plurality of the light-emitting portions 21 and the baffle 22 are arranged on a side of the array substrate 11 close to the cover plate 12, and the color film layer 30 is arranged on a side of the light-emitting portion 21 away from the array substrate 11, and at the same time, the color film layer 30 is also located between the cover plate 12 and the light-emitting portion 21.

[0081] The retaining wall 22 is arranged between adjacent light-emitting parts 21, the color film layer 30 includes a plurality of color resist blocks 31 arranged corresponding to the plurality of light-emitting parts 21, and the black matrix 32 located between the adjacent color resist blocks 31, and the black matrix 32 is in contact with the cover plate 12, and the color resist blocks 31 are in contact with the cover plate 12.

[0082] In some embodiments, the plurality of light-emitting portions 21 and the plurality of color resist blocks 31 are arranged in a one-to-one correspondence, and the orthographic projection of the black matrix 32 on the array substrate 11 is located between the orthographic projections of the plurality of light-emitting portions 21 on the array substrate 11 .

[0083] In some embodiments, the orthographic projection of the black matrix 32 on the array substrate 11 is located within the orthographic projection of the retaining wall 22 on the array substrate 11 .

[0084] In some embodiments, the display panel further includes an encapsulation layer 40 disposed between the plurality of light-emitting portions 21 and the color film layer 30 , and the encapsulation layer 40 covers the plurality of light-emitting portions 21 and the retaining wall 22 to block water and oxygen.

[0085] In some embodiments, the array substrate 11 includes a substrate and a thin film transistor layer disposed on the substrate, and the plurality of light emitting portions 21 are disposed on a side of the thin film transistor layer away from the substrate.

[0086] In some embodiments, the substrate may be a hard substrate, such as a glass substrate; or, the substrate may be a flexible substrate, such as a substrate formed of polyimide. When the substrate is a flexible substrate, the substrate may be formed of multiple sub-substrates made of the same material, such as polyimide, and adjacent sub-substrates are bonded by bonding sub-layers.

[0087] In some embodiments, the thin film transistor layer includes a thin film transistor, the thin film transistor includes a semiconductor located on the substrate, and the semiconductor can be formed of polysilicon or a metal oxide (such as indium gallium zinc oxide). Wherein, the semiconductor is divided into a channel region and a source region and a drain region formed on both sides of the channel region. The thin film transistor layer also includes a first gate insulating layer, and the first gate insulating layer covers the semiconductor. The thin film transistor also includes a first gate formed on the first gate insulating layer, and the first gate overlaps with the channel region. The first gate can be formed as a plurality of layers or a single layer including a low resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material with high corrosion resistance. The thin film transistor layer also includes a second gate insulating layer, and the second gate insulating layer covers the first gate. The thin film transistor also includes a second gate located on the second gate insulating layer, and the second gate overlaps with the first gate. The second gate can be formed as a plurality of layers or a single layer including a low resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material with high corrosion resistance. The thin film transistor layer also includes a first interlayer insulating layer formed on the second gate. The first interlayer insulating layer, the first gate insulating layer, and the second gate insulating layer include a source contact hole and a drain contact hole, and the source region and the drain region are exposed through the source contact hole and the drain contact hole, respectively.

[0088] The thin film transistor also includes a source and a drain arranged in the same layer, the source and the drain are both formed on the first interlayer insulating layer, the source is connected to the source region through the source contact hole, and the drain is connected to the drain region through the drain contact hole. The source and the drain may be multiple layers or a single layer formed of a low resistance material such as Al, Ti, Mo, Cu, Ni, or an alloy thereof, or a material with high corrosion resistance. For example, the source and the drain may be a triple layer of Ti / Cu / Ti, Ti / Ag / Ti, Ti / Al / Ti or Mo / Al / Mo or other single or multilayer structures.

[0089] In some embodiments, the thin film transistor layer further includes a planar layer located on a side of the first interlayer insulating layer away from the substrate 111 , and the planar layer covers the source electrode and the drain electrode.

[0090] In some embodiments, the display panel further includes a plurality of anodes (not shown in the figure) disposed on the planar layer, and the anodes are connected to the source electrode or the drain electrode.

[0091] In some embodiments, the display panel also includes a pixel definition layer disposed on the flat layer, and a plurality of pixel openings and a retaining wall 22 surrounding each of the pixel openings are formed in the pixel definition layer. The plurality of pixel openings can be arranged one-to-one corresponding to the plurality of anodes, and each of the pixel openings exposes the upper surface of the corresponding anode.

[0092] Furthermore, the plurality of light-emitting portions 21 are arranged corresponding to the plurality of pixel openings, and each of the light-emitting portions 21 is arranged in the corresponding pixel opening and is located on the corresponding anode.

[0093] In some embodiments, the plurality of light emitting portions 21 and the plurality of pixel openings are arranged in a one-to-one correspondence.

[0094] In some embodiments, the display panel further includes a cathode layer (not shown in the figure) disposed on a side of the plurality of light-emitting portions 21 away from the array substrate 11 , and the cathode layer covers the plurality of light-emitting portions 21 and the retaining wall 22 .

[0095] In the embodiment of the present application, the light-emitting portion 21 can be prepared by inkjet printing process, and the film thickness of the light-emitting portion 21 can be thick on both sides and thin in the middle.

[0096] In some embodiments, the light-emitting portion 21 may include a first sublayer 211, a second sublayer 212, and a third sublayer 213 which are stacked, wherein the first sublayer 211 may be a hole layer, for example, the hole layer may include a hole injection layer and / or a hole transport layer, the second sublayer 212 may be an organic light-emitting layer, and the third sublayer 213 may be an electron layer, for example, the electron layer may include an electron injection layer and / or an electron transport layer.

[0097] The light emitting portion 21 may include a first sub-portion 201 , a second sub-portion 202 and a third sub-portion 203 , wherein the second sub-portion 202 is connected to the first sub-portion 201 , and the third sub-portion 203 is connected to a side of the second sub-portion 202 away from the first sub-portion 201 .

[0098] Furthermore, the thickness of the first sub-section 201 is smaller than the thickness of the second sub-section 202, and the thickness of the second sub-section 202 is smaller than the thickness of the third sub-section 203; that is, the first sub-section 201 is located in the middle area of ​​the light-emitting section 21 with a smaller thickness, the third sub-section 203 is located in the edge area of ​​the light-emitting section 21 with a larger thickness, and the second sub-section 202 is located between the first sub-section 201 and the third sub-section 203.

[0099] In step S20, a direction parallel to the array substrate 11 is set as a first direction X, a direction perpendicular to the array substrate 11 is set as a second direction Y, and a first width w of the first sub-portion 201 along the first direction X is obtained. 01 , a second width w of the second sub-portion 202 along the first direction X 02 , a third width w of the third sub-portion 203 along the first direction X 03 , a width w0 of the light emitting portion 21 along the first direction X, and a light shielding width w of the black matrix 32 to adjacent light emitting portions 21 , wherein the first direction X is parallel to the array substrate 11 .

[0100] It should be noted that the light shielding width w of the black matrix 32 to the adjacent light emitting portion 21 is the width of the light emitted by the light emitting portion 21 blocked by the adjacent black matrix 32 .

[0101] It can be understood that the first width w 01 It can be taken from the average thickness of the first sub-section 201, such as Figure 4 As shown; the second width w 02 It can be taken from the average thickness of the second sub-section 202, such as Figure 5 As shown; the third width w 03 It can be taken from the average thickness of the third sub-section 203, such as Figure 6 As shown; and the first width w 01 The second width w 02 , the third width w 03 The width w0 of the light emitting portion 21 along the first direction X is known and can be obtained through measurement or setting of process parameters.

[0102] In some embodiments, under a preset viewing angle C, the first light 2110 is the light emitted from the edge of the black matrix 32, and the light to the right of the first light 2110 will be blocked by the black matrix 32, and the area from the position where the light-emitting portion 21 emits the first light 2110 to the right edge is a shading area, and the width of the shading area is the shading width w.

[0103] Among them, it is known that n1sinA=n2sinB=n3sinC, n1 is the refractive index of the encapsulation layer 40, n2 is the refractive index of the color resist block 31, n3 is the refractive index of air, A is the incident angle of the first light 2110 at the encapsulation layer 40 entering the color resist block 31 seen at the preset viewing angle C, and B is the incident angle of the first light 2110 at the color resist block 31 entering the cover plate 12.

[0104] Furthermore, under the preset viewing angle C, the calculation formula of the shading width of the black matrix 32 to the adjacent light-emitting portion 21 is:

[0105] w=w5-w6;

[0106] Wherein, w5=w3+w4, w6=(w1−w2) / 2, w1 is the width of the retaining wall 22 , and w2 is the width of the black matrix 32 .

[0107] Furthermore, w3 = h1TanA, w4 = h2TanB, wherein h1 is the distance between the light emitting portion 21 and the color resist block 31 , and h2 is the thickness of the color resist block 31 .

[0108] Under the preset viewing angle C, the calculation formula of the shading width is:

[0109] w=h1TanA+h2TanB-(w1-w2) / 2;

[0110] A = arcsin[(n3sinC) / n1];

[0111] B = arcsin[(n3sinC) / n2];

[0112] Among them, w is the shading width, h1 is the distance between the light-emitting portion 21 and the color resist block 31, h2 is the thickness of the color resist block 31, w1 is the width of the retaining wall 22 along the first direction X, w2 is the width of the black matrix 32 along the first direction X, n1 is the refractive index of the encapsulation layer 40, n2 is the refractive index of the color resist block 31, n3 is the refractive index of air, A is the incident angle of the first light 2110 seen at the preset viewing angle when the encapsulation layer 40 enters the color resist block 31, B is the incident angle of the first light 2110 when the color resist block 31 enters the cover plate 12, and C is the preset viewing angle.

[0113] Therefore, according to the above formula, the light shielding width w of the black matrix 32 to the adjacent light-emitting parts 21 can be calculated.

[0114] In step S30, according to the shading width w, the first width w 01 The second width w 02 and the third width w 03 Get the spectrum calculation factor.

[0115] According to the shading width w and the first width w 01 The second width w 02 , the third width w 03The size relationship between them can be used to calculate the light emitting spectrum of the display panel through different calculation formulas.

[0116] In one embodiment of the present application, when the shading width w is smaller than the third width w 03 When , in step S30, the calculation formula of the spectrum calculation factor is:

[0117] r1=w / w0;

[0118] Wherein, r1 is a spectrum calculation factor, and w0 is a width of the light emitting portion 21 along the first direction X.

[0119] Further, in step S40, the light emission spectrum of the display panel is obtained according to the first light emission spectrum of the first subsection 201, the second light emission spectrum of the second subsection 202, the third light emission spectrum of the third subsection 203 and the spectrum calculation factor.

[0120] Specifically, the calculation formula of the luminous spectrum at the preset viewing angle is:

[0121] S = S1 + S2 + S3 × r1;

[0122] Among them, S is the luminescence spectrum, S1 is the first luminescence spectrum, S2 is the second luminescence spectrum, and S3 is the third luminescence spectrum.

[0123] It should be noted that the first light emitting spectrum S1 , the second light emitting spectrum S2 , and the third light emitting spectrum S3 can all be obtained through existing simulation software according to their average thicknesses.

[0124] In another embodiment of the present application, when the shading width w is greater than the third width w 03 , and is smaller than the second width w 02 and the third width w 03 When the sum of , in step S30, the calculation formula of the spectrum calculation factor is:

[0125] r2=(ww 03 ) / w 02 ;

[0126] Among them, r2 is the spectrum calculation factor.

[0127] Further, in step S40, the light emission spectrum of the display panel is acquired according to the first light emission spectrum of the first subsection 201, the second light emission spectrum of the second subsection 202, the third light emission spectrum of the third subsection 203 and the spectrum calculation factor.

[0128] Specifically, the calculation formula of the luminous spectrum at the preset viewing angle is:

[0129] S = S1 + S2 × r2;

[0130] Wherein, S is the luminescence spectrum, S1 is the first luminescence spectrum, and S2 is the second luminescence spectrum.

[0131] In another embodiment of the present application, when the shading width is greater than the sum of the second width and the third width, and less than the sum of the first width, the second width and the third width, in step S30, the calculation formula of the spectrum calculation factor is:

[0132] r3=(ww 02 -w 03 ) / w 01 ;

[0133] Among them, r3 is the spectrum calculation factor, w 01 is the first width, w 02 is the second width, w 03 is the third width.

[0134] Further, in step S40, the light emission spectrum of the display panel is acquired according to the first light emission spectrum of the first subsection 201, the second light emission spectrum of the second subsection 202, the third light emission spectrum of the third subsection 203 and the spectrum calculation factor.

[0135] Specifically, the calculation formula of the luminous spectrum at the preset viewing angle is:

[0136] S = S1r3;

[0137] Wherein, S is the luminescence spectrum, and S1 is the first luminescence spectrum.

[0138] As mentioned above, through the above calculation steps, the light emission spectrum of the display panel under the preset viewing angle C can be obtained.

[0139] Please refer to Figure 7 , the luminous spectrum of the luminous portion 21 obtained by the calculation method of the luminous spectrum of the display panel provided in the embodiment of the present application and the luminous spectrum obtained by actually detecting the display panel; wherein curve A is the luminous spectrum of the luminous portion 21 obtained by the calculation method of the luminous spectrum of the display panel provided in the embodiment of the present application, curve B is the luminous spectrum obtained by actual detection, curve C is the second luminous spectrum, curve D is the first luminous spectrum, curve E is the third luminous spectrum, and by Figure 7It can be seen that the luminous spectrum obtained by the calculation method of the luminous spectrum of the display panel provided in the embodiment of the present application is extremely close to the luminous spectrum obtained by actual detection of the display panel, which means that the embodiment of the present application can effectively improve the phenomenon of inaccurate calculation results of the luminous spectrum caused by uneven thickness of the light-emitting part.

[0140] Furthermore, the luminance viewing angle curve and the chromaticity viewing angle curve of the display panel can be calculated from the luminous spectrum at the preset viewing angle C obtained by the above calculation.

[0141] In some embodiments, the tristimulus values ​​XYZ are calculated according to the calculated light spectrum of the display panel, and the calculation formula of the tristimulus values ​​XYZ is as follows:

[0142]

[0143] Among them, L e,Ω,λ (λ) represents the radiation intensity of the self-luminous light, λ∈(360nm-780nm); X may be the corresponding value of the red spectrum, Y may be the corresponding value of the green spectrum, and Z may be the corresponding value of the blue spectrum.

[0144] As mentioned above, Y represents the brightness at the preset viewing angle, and the ratio of the brightness at the preset viewing angle to the brightness at a viewing angle of 0° is the ordinate at the preset viewing angle in the following brightness curve.

[0145] According to the above calculation process, the vertical coordinates at other brightness viewing angles can be obtained. Figure 8 and Fig. 9 As shown, Figure 8 The luminous spectrum obtained by the calculation method of the luminous spectrum of the display panel provided by the embodiment of the present application, and the brightness viewing angle curve calculated from the luminous spectrum, Fig. 9 It is a brightness viewing angle curve of the display panel obtained through actual testing.

[0146] Furthermore, the xy color gamut coordinates are calculated according to the following formula:

[0147]

[0148] Next, u' and v' are calculated according to the following formula:

[0149]

[0150] Then, the following chromaticity curve ordinate value is calculated according to the following formula, for example, when the preset viewing angle is 60°:

[0151]

[0152] According to the above calculation process, the ordinate of the chromaticity curve at other viewing angles can be obtained, such as Fig.10 and Fig.11 As shown, Fig.10 The luminous spectrum obtained by the calculation method of the luminous spectrum of the display panel provided by the embodiment of the present application, and the chromaticity viewing angle curve calculated from the luminous spectrum, Fig.11 is a chromaticity viewing angle curve of the display panel obtained through actual testing.

[0153] As shown in Table 1 below, the embodiments of the present application provide comparative examples 1 and 2 and embodiments to verify the calculation method of the luminous spectrum of the display panel provided in the embodiments of the present application, wherein only the calculation method of the luminous spectrum is different between comparative examples 1 and 2 and the embodiments, while the same method is used to calculate the brightness time and chromaticity viewing angle from the luminous spectrum.

[0154] In comparative example 1, the black matrix 32 is not provided in the display panel, and the light emission spectrum of the display panel is obtained by using simulation software.

[0155] In Comparative Example 2, the spectrum calculation factor is r1=w / w0, and the luminescent spectrum is the luminescent spectrum in Comparative Example 1 multiplied by the spectrum calculation factor r1.

[0156] In the embodiment, the light emitting spectrum is calculated using the method for calculating the light emitting spectrum of the display panel provided in the embodiment of the present application.

[0157] After the calculation process in the above embodiment, the brightness viewing angle and the chromaticity viewing angle are obtained from the luminous spectrum, and the results are shown in Table 1 below:

[0158] Table 1

[0159]

[0160]

[0161] It can be seen from Table 1 above that due to the uneven thickness of the light-emitting portion 21, the luminous efficiency and luminous intensity of the light-emitting portion 21 will be reduced, and therefore, the corresponding brightness viewing angle and chromaticity viewing angle will also be reduced.

[0162] As mentioned above, the embodiment of the present application divides the light-emitting portion 21 of the display panel according to different thicknesses, and calculates the light-emitting spectrum of the display panel according to different thickness regions and shading widths. Compared with the existing simulation algorithm of the light-emitting spectrum of the display panel, the existing simulation algorithm only considers the shielding effect of the black matrix on the light-emitting portion, but does not consider the uneven thickness of the light-emitting portion 21 itself. Therefore, the embodiment of the present application can improve the phenomenon of inaccurate calculation results of the light-emitting spectrum caused by the uneven thickness of the light-emitting portion 21, thereby improving the calculation accuracy of the light-emitting spectrum of the display panel.

[0163] In addition, an embodiment of the present application further provides a simulation device, which is used to calculate the light emission spectrum of the display panel using the calculation method for the light emission spectrum of the display panel described in the above embodiment.

[0164] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0165] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0166] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0167] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. A method for calculating the luminous spectrum of a display panel, characterized in that: include: A display panel is provided, the display panel comprising a plurality of light-emitting portions and a black matrix disposed on one side of the light-emitting portions, each of the light-emitting portions comprising a first sub-portion, a second sub-portion connected to the first sub-portion, and a third sub-portion located on a side of the second sub-portion away from the first sub-portion, wherein the thickness of the first sub-portion is smaller than the thickness of the second sub-portion, and the thickness of the second sub-portion is smaller than the thickness of the third sub-portion; Acquire a first width of the first sub-section along a first direction, a second width of the second sub-section along the first direction, a third width of the third sub-section along the first direction, and a light shielding width of the black matrix to the adjacent light-emitting sections, wherein the first direction is parallel to the array substrate; Acquire a spectrum calculation factor according to the shading width, the first width, the second width, and the third width; The light emission spectrum of the display panel is acquired according to the first light emission spectrum of the first sub-section, the second light emission spectrum of the second sub-section, the third light emission spectrum of the third sub-section, and the spectrum calculation factor.

2. The method for calculating the luminous spectrum of a display panel according to claim 1, characterized in that: In the step of providing the display panel, the display panel further comprises: An array substrate; A cover plate, arranged opposite to the array substrate, wherein the plurality of light emitting portions are located on a side of the array substrate close to the cover plate; A retaining wall is arranged on a side of the array substrate close to the cover plate, and the retaining wall is located between adjacent light-emitting parts; a color filter layer, arranged between the cover plate and the light-emitting part, the color filter layer comprising a plurality of color resist blocks arranged corresponding to the plurality of light-emitting parts and the black matrix located between adjacent color resist blocks, the orthographic projection of the black matrix on the array substrate being located between the orthographic projections of the plurality of light-emitting parts on the array substrate; The encapsulation layer is arranged between the plurality of light-emitting parts and the color filter layer.

3. The method for calculating the luminous spectrum of a display panel according to claim 2, characterized in that: The step of obtaining a first width of the first sub-section along the first direction, a second width of the second sub-section along the first direction, a third width of the third sub-section along the first direction, and a light shielding width of the black matrix to the adjacent light-emitting sections comprises: At a preset viewing angle, the calculation formula for the shading width is: w=h1TanA+h2TanB-(w1-w2) / 2; A = arcsin[(n3sinC) / n1]; B = arcsin[(n3sinC) / n2]; Among them, w is the shading width, h1 is the distance between the light-emitting part and the color resist block, h2 is the thickness of the color resist block, w1 is the width of the baffle along the first direction, w2 is the width of the black matrix along the first direction, n1 is the refractive index of the encapsulation layer, n2 is the refractive index of the color resist block, n3 is the refractive index of air, A is the incident angle of the first light seen at the preset viewing angle when the encapsulation layer enters the color resist block, B is the incident angle of the first light when the color resist block enters the cover plate, and C is the preset viewing angle.

4. The method for calculating the luminous spectrum of a display panel according to claim 3, characterized in that: When the shading width is smaller than the third width, the step of acquiring a spectrum calculation factor according to the shading width, the first width, the second width and the third width comprises: The calculation formula of the spectrum calculation factor is: r1=w / w0; Wherein, r1 is a spectrum calculation factor, and w0 is a width of the light-emitting portion along the first direction.

5. The method for calculating the light emission spectrum of a display panel according to claim 4, characterized in that: The step of obtaining the light emission spectrum of the light emitting portion according to the first light emission spectrum of the first sub-portion, the second light emission spectrum of the second sub-portion, the third light emission spectrum of the third sub-portion and the spectrum calculation factor comprises: The calculation formula of the luminous spectrum at the preset viewing angle is: S = S1 + S2 + S3 × r1; Among them, S is the luminescence spectrum, S1 is the first luminescence spectrum, S2 is the second luminescence spectrum, and S3 is the third luminescence spectrum.

6. The method for calculating the light emission spectrum of a display panel according to claim 3, characterized in that: When the shading width is greater than the third width and less than the sum of the second width and the third width, the step of acquiring a spectrum calculation factor according to the shading width, the first width, the second width and the third width includes: The calculation formula of the spectrum calculation factor is: r2=(ww 03 ) / In 02 ; Among them, r2 is the spectrum calculation factor, w 02 is the second width, w 03 is the third width.

7. The method for calculating the light emission spectrum of a display panel according to claim 6, characterized in that: The step of obtaining the light emission spectrum of the light emitting portion according to the first light emission spectrum of the first sub-portion, the second light emission spectrum of the second sub-portion, the third light emission spectrum of the third sub-portion and the spectrum calculation factor comprises: The calculation formula of the luminous spectrum at the preset viewing angle is: S = S1 + S2 × r2; Wherein, S is the luminescence spectrum, S1 is the first luminescence spectrum, and S2 is the second luminescence spectrum.

8. The method for calculating the light emission spectrum of a display panel according to claim 3, characterized in that: When the shading width is greater than the sum of the second width and the third width, and less than the sum of the first width, the second width, and the third width, the step of acquiring a spectrum calculation factor according to the shading width, the first width, the second width, and the third width includes: The calculation formula of the spectrum calculation factor is: r3=(ww 02 -In 03 ) / In 01 ; Among them, r3 is the spectrum calculation factor, w 01 is the first width, w 02 is the second width, w 03 is the third width.

9. The method for calculating the light emission spectrum of a display panel according to claim 8, characterized in that: The step of obtaining the light emission spectrum of the light emitting portion according to the first light emission spectrum of the first sub-portion, the second light emission spectrum of the second sub-portion, the third light emission spectrum of the third sub-portion and the spectrum calculation factor comprises: The calculation formula of the luminous spectrum at the preset viewing angle is: S = S1r3; Wherein, S is the luminescence spectrum, and S1 is the first luminescence spectrum.

10. A simulation device, characterized in that: The simulation device is used to calculate the light emission spectrum of the display panel using the calculation method for the light emission spectrum of the display panel as described in any one of claims 1 to 9.

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