WO2018223874A1

WO2018223874A1 - Color filter, display panel, and display device

Info

Publication number: WO2018223874A1
Application number: PCT/CN2018/088886
Authority: WO
Inventors: 孟宪芹; 吕敬; 杨亚锋; 陈小川; 谭纪风; 王维; 孟宪东; 高健; 牛海军
Original assignee: 京东方科技集团股份有限公司
Priority date: 2017-06-05
Filing date: 2018-05-29
Publication date: 2018-12-13
Also published as: CN106990465A

Abstract

Provided is a color filter comprising multiple light filtering regions for different colors, and further comprising: a metal grating (11), the metal grating (11) having different grating periods in the light filtering regions for different colors; and a planar optical waveguide (12) comprising a buffer layer (121), a waveguide layer (122) and a substrate (123). The metal grating (11), the buffer layer (121), the waveguide layer (122) and the substrate (123) are arranged sequentially in a light emission direction. The waveguide layer (122) has a refractive index greater than a refractive index of the buffer layer (121) and greater than a refractive index of the substrate (123). The metal grating can realize filtering of light beams having different colors by changing grating periods. The planar optical waveguide performs secondary filtering on the filtered light beams having different colors, narrowing the full widths at half maxima of spectrums of various color light beams, thereby increasing color purity of the light beams, enhancing color saturation of various colors, and accordingly increasing contrast of displayed colors. Also provided are a display panel comprising the color filter and a display device comprising the display panel.

Description

Color filter, display panel and display device

The present disclosure claims the priority of the Chinese patent application filed on June 5, 2017, the Chinese National Intellectual Property Office, the application number is 201710411865.0, and the invention name is "a color filter, a display panel, and a display device", the entire contents of which are incorporated herein by reference. The disclosure is incorporated by reference.

Technical field

The present disclosure relates to a color filter, a display panel, and a display device.

Background technique

With the rapid development of display technology, users have higher and higher requirements for the color display effect of display devices. The organic light emitting diode (OLED) display device has more and more attention to the liquid crystal display device, such as self-luminous, high contrast, fast response, and wide viewing angle.

Summary of the invention

In a first aspect, the present disclosure provides a color filter comprising a plurality of filter regions of different colors, wherein the color filter comprises:

a metal grating having different grating periods in the filter regions of different colors;

a planar optical waveguide comprising a buffer layer, a waveguide layer and a substrate, wherein the metal grating, the buffer layer, the waveguide layer and the substrate are sequentially disposed along an outgoing direction of light, and the refractive index of the waveguide layer The rate is greater than the refractive index of the buffer layer and the refractive index of the substrate.

In a possible implementation, the metal grating is formed on a surface of the buffer layer away from the side of the waveguide layer.

In a possible implementation manner, the buffer layer has a refractive index equal to a refractive index of the substrate.

In a possible implementation, the buffer layer has a thickness of 50-100 nm, and the waveguide layer has a thickness of 100 nm.

In a possible implementation manner, the grating period of the metal grating in the filter region of any color is the same value, and the filter regions of the plurality of different colors include a red filter region and a green filter region. And blue filter areas;

a grating period of the metal grating in the red filter region is greater than a grating period in the green filter region, and a grating period of the metal grating in the green filter region is greater than in the blue filter The grating period in the light region.

In a possible implementation, the grating period of the metal grating in the red filter region is 370-430 nm, and the grating period of the metal grating in the green filter region is 310-360 nm. The grating period of the metal grating in the blue filter region is 230-280 nm.

In a possible implementation manner, the metal grating includes a plurality of metal wires extending in the same direction.

In a possible implementation manner, the material of the metal grating is nano silver, and the metal grating has a thickness of 40 nm.

In a possible implementation manner, a duty ratio of the metal grating in each of the filter regions is 0.75, and a duty ratio of the metal grating is a non-transmission region of the metal grating in a grating The ratio of the period.

In a second aspect, the present disclosure provides a display panel comprising any of the above-described color filters.

In a possible implementation manner, the display panel is a bottom emission organic light emitting display panel;

The bottom emission type organic light emitting display panel includes a substrate, an anode, a color filter, a white organic light emitting layer, and a cathode which are sequentially disposed on the substrate.

In a possible implementation manner, the display panel is a top emission type organic light emitting display panel;

The top emission type organic light emitting display panel comprises: a substrate, an anode, a white organic light emitting layer, the color filter and a cathode which are sequentially disposed on the substrate.

In a third aspect, the present disclosure provides a display device including any of the above display panels.

DRAWINGS

1 is a top plan view of a color filter according to an embodiment of the present disclosure;

2 is a schematic structural diagram of a color filter according to an embodiment of the present disclosure;

FIG. 3 is a schematic structural diagram of a color filter according to an embodiment of the present disclosure;

4 is a schematic diagram of a filter principle of a color filter according to an embodiment of the present disclosure;

FIG. 5 is a top view of a color filter according to an embodiment of the present disclosure;

6 is a material characteristic curve of nano silver used in an embodiment of the present disclosure;

7 is a top plan view of a metal grating provided by an embodiment of the present disclosure;

FIG. 8 is a transmission light spectrum of a color filter according to an embodiment of the present disclosure;

FIG. 9 is a schematic structural diagram of a bottom emission type organic light emitting display panel according to an embodiment of the present disclosure;

FIG. 10 is a schematic structural diagram of a top emission type organic light emitting display panel according to an embodiment of the present disclosure.

detailed description

The present disclosure will be further described with reference to the accompanying drawings and embodiments. However, the example embodiments can be embodied in a variety of forms and should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided to make the present disclosure more comprehensive and complete, and fully convey the concept of the example embodiments. To those skilled in the art.

In the related art, the manner in which the OLED display panel displays color includes the following: First, the color mode in which the sub-pixels of each color independently emit light can be realized by two vertical primary colors and horizontal three primary colors. The above color mode requires evaporation of the three primary color arrangements through the fine metal mask, and in addition to the high cost, the alignment of the pixel and the mask and the selection of the mask material are difficult in the implementation process. Second, the color conversion illumination mode, that is, the technology of realizing color illumination by using a blue OLED combined with a color conversion film array, is very difficult to develop in the development of the color conversion film. Thirdly, the white light emitting combined with the color filter has a light emitting mode similar to that of the liquid crystal panel, and the white light OLED is used as a backlight, and the color filter is used for filtering the colors to realize color display. This approach is much less expensive than the other two color illumination methods described above, and many OLED displays currently employ this illumination mode. In addition, the fields of the liquid crystal display panel, the color light-emitting diode, and the like may also adopt the illumination mode of the backlight combined with the color filter, but the light transmittance and the color purity of the color filter are relatively low, resulting in color saturation of the display panel. Degree, contrast, brightness, etc. are all to be further improved.

Embodiments of the present disclosure provide a color filter, a display panel, and a display device. The metal grating in the embodiment of the present disclosure can achieve different color filtering effects by changing a grating period, and the planar optical waveguide can filter out different colors. The light is subjected to secondary filtering to narrow the spectral half-width of each color light to improve the color purity, and thus the embodiment of the present disclosure can improve the color saturation of each color, thereby improving the contrast of the color display during display.

FIG. 1 shows a top view of a color filter provided by an embodiment of the present disclosure. As shown in FIG. 1 , the color filter provided by the embodiment of the present disclosure includes a plurality of filter regions (P1-P3) of different colors, wherein the regions indicated by P1-P3 are respectively filtered by three different colors. region.

2 is a schematic structural view of a color filter provided by an embodiment of the present disclosure. Illustratively, as shown in FIG. 2, the color filter may include a metal grating 11 and a planar optical waveguide 12, wherein the grating gratings have different grating periods in different color filter regions, and the metal grating 11 and the planar optical waveguide 12 is sequentially disposed along the outgoing direction of the light (usually the light outgoing direction of the white backlight, as indicated by the arrow in FIG. 2).

It should be noted that the metal grating can have a high transmittance for light of a certain band under appropriate parameters, and the half-peak width of the transmitted light wave can be further reduced by the planar optical waveguide. Therefore, in the color filter provided by the embodiment of the present disclosure, a metal grating can be used in combination with a planar optical waveguide to replace the color filter of the color filter in the related art, and the filter regions corresponding to different colors are set to have different grating periods. This also serves as a filter for the three primary colors of light. Moreover, the use of the metal grating in combination with the planar optical waveguide instead of the color film can also avoid the problem of low transmittance caused by the large absorption loss of the color film to the light, thereby improving the display brightness in practical applications. Further, under the premise that the thickness of the metal grating is constant, the transmission wavelength of each filter region (ie, the wavelength corresponding to the color of the filter region) decreases as the grating period corresponding to each filter region increases. Sub-band transmission of the backlight. For example, the transmission wavelength of the filter regions P1 - P3 in FIG. 1 may have a relationship that the transmission wavelength of the filter region P1 is smaller than the transmission wavelength of P2, and when the transmission wavelength of P2 is smaller than the transmission wavelength of P3, the corresponding metal grating 11 The grating period in the filter region P1 is larger than the grating period in the filter region P2, and the grating period in the filter region P2 is larger than the grating period in the filter region P3.

Alternatively, the metal grating 11 can cooperate with the planar optical waveguide 12 to control the wavelength range of the transmitted light. Light of different colors may have different diffraction angles based on diffraction of light waves occurring at the metal grating 11, and light waves having a larger diffraction angle may be confined in the planar optical waveguide 12 to propagate laterally in a total reflection manner, with only small diffraction The angular light wave can pass through the planar optical waveguide 12. Thus, the planar optical waveguide 12 can cooperate with the metal grating 11 to function as a secondary filter, so that the half slit width of the transmitted light is narrower and the light output color is more pure. Thereby, the color saturation of each color is improved, and the contrast of the color display can be improved during display.

FIG. 3 is a schematic structural diagram of a color filter provided by an embodiment of the present disclosure. In the above color filter provided by the embodiment of the present disclosure, as shown in FIG. 3, the planar optical waveguide 12 may include: a buffer layer 121, a waveguide layer 122, and a substrate 123 which are sequentially disposed along an outgoing direction of the light; wherein the metal grating 11 is located on a side of the buffer layer 121 facing away from the waveguide layer 122. Alternatively, the planar optical waveguide 12 can be fabricated in reverse order with the light emission direction. For example, the waveguide layer 122 and the buffer layer 121 can be sequentially formed on the substrate 123, and the metal grating 11 can be directly formed on the plane. The buffer layer 121 of the optical waveguide 12.

FIG. 4 is a schematic diagram showing the filtering principle of a color filter provided by an embodiment of the present disclosure. As an example, the filtering principle of the color filter of the embodiment of the present disclosure is as shown in FIG. 4: the light wave incident on the metal grating 11 is reflected and diffracted, and the reflected light returns along the original propagation direction, and the diffracted light is returned. It will have a corresponding distribution according to the grating diffraction principle - each wavelength of light will have a diffraction peak at each diffraction order, and the light of each wavelength in the same diffraction order will be distinguished from each other by the difference of diffraction angles. Therefore, the light wave having a small diffraction angle can be transmitted through the planar optical waveguide 12 several times as shown in FIG. 4, and the light wave having a larger diffraction angle is on the interface of the waveguide layer 122 as shown in FIG. Total reflection occurs, thereby being laterally conducted by the planar optical waveguide 12 without being present in the transmitted light of the planar optical waveguide 12. Of course, part of the diffracted light is also reflected in the planar optical waveguide 12 without passing through the planar optical waveguide 12. In addition, since the distribution of the diffraction angle can be designed by the parameters of the metal grating 11, the metal grating 11 and the planar optical waveguide 12 can cooperate with each other to realize the filtering effect of the specified wavelength band, thereby realizing a higher transmittance color instead of the color film. Filter. In one example, the forming material and size parameters of the layers in the planar optical waveguide 12 may be fixed first, and then the filtering effect of the metal grating 11 of different shape and size parameters may be determined by experimental measurement or simulation calculation to determine each type. The metal grating 11 to be used in the filter region of the color ultimately achieves the filtering effect required in the filter regions of different colors.

For example, forming a planar optical waveguide structure requires ensuring that the refractive index of the waveguide layer 122 is greater than the refractive indices of the buffer layer 121 and the substrate 123. A symmetric optical waveguide structure is formed when the buffer layer 121 and the substrate 123 have the same refractive index. The buffer layer 121 and the substrate 123 may have a refractive index of about 1.5, and may be made of a material such as transparent resin or silicon dioxide; the refractive index of the waveguide layer 122 may be between 1.8 and 2.5, such as silicon oxide (Si). ₃ N ₄ ), indium tin oxide (ITO) and other materials are produced.

The following is an example of a wide range of color filters that can be filtered to generate red, green, and blue colors, and an alternative implementation of the metal grating 11 and the planar optical waveguide 12 in practical applications will be specifically described. In this embodiment, the basic structure of the metal grating 11 is a plurality of metal wires extending in the same direction, so that a one-dimensional metal linear grating of a corresponding grating period and a line width can be obtained by setting the line width and the arrangement pitch of the metal lines. In other possible implementations, other types of grating forms, such as ring gratings, holographic gratings, step gratings, etc., may be selected depending on the desired filtering effect and the process that can be implemented, and may not be limited thereto.

FIG. 5 shows a top view of a color filter provided by an embodiment of the present disclosure. As shown in FIG. 5, the color filter provided by the embodiment of the present disclosure may include a red filter region R, a green filter region G, and a blue filter region B.

Wherein, the grating period of the metal grating 11 in the red filter region R is equal; the grating period of the metal grating 11 in the green filter region G is equal; the metal grating 11 is in the blue filter region B. The grating periods are all equal. And the grating period of the metal grating 11 in the red filter region R is larger than the grating period in the green filter region G, and the grating period of the metal grating 11 in the green filter region G is larger than that in the blue filter region B cycle.

It should be noted that the grating grating period affects the wavelength of the transmitted light, and the material used for the metal grating 11 and the thickness of the metal also affect the light intensity and wavelength of the transmitted light. In specific applications, the design of the grating period of the metal grating and the thickness of the metal layer can be optimized according to the material properties of the metal.

In the above color filter provided by the embodiment of the present disclosure, the metal grating 11 is made of nano silver, and the metal grating is controlled to the order of nanometers, which can effectively improve the grating resolution. Figure 6 shows a material property curve of nanosilver employed in one embodiment of the present disclosure. The material characteristic curve of the nano silver used therein is as shown in FIG. 6, and includes the relationship between the refractive index of the nano silver and the wavelength (curve) and the relationship between the extinction coefficient and the wavelength (straight line). In one example, the metal grating 11 has a uniform thickness and is set to 40 nm. Further, the materials of the buffer layer 121 and the substrate 123 are both SiO ₂ , wherein the thickness of the buffer layer 121 is set to 50-100 nm; the material of the waveguide layer 122 is SiN _x , and the thickness of the waveguide layer 122 determines the existence of the waveguide in the waveguide. The number of wave modes, the thicker the waveguide layer 122, the more the number of guided wave modes existing in the waveguide, and the number or intensity of the interference peaks increases with the thickness of the waveguide layer 122 in addition to the movement of the main peak position of the transmitted light. Big and big. In the embodiment of the present disclosure, the thickness of the waveguide layer 122 is exemplarily set to 100 nm.

On this basis, the embodiments of the present disclosure optimize the parameters of the metal grating by using the optical and optoelectronic software FDTD Solutions (Lumerical.ca) based on the finite difference time domain (FDTD) method. By optimizing the grating structure of the nano silver, it is found that when the period of the grating is in the range of 230-280 nm, 310-360 nm and 370-430 nm, the duty ratio of the metal grating is about 0.75, and the thickness of the waveguide layer 122 is 100 nm, Achieve blue, green, and red transmitted light. The duty ratio of the metal grating is the ratio of the non-transmissive region (ie, the width of the metal line) in the grating period. When the FF of the grating structure is too large or too small, the wavelength, half-width, and transmission efficiency of the transmitted light are affected to some extent.

Alternatively, the metal grating 11 when the light is transmitted in three colors of red, green, and blue may adopt geometric parameters (in nm) as shown in the following table:

颜色colour	光栅周期(p)Grating period (p)	蚀刻高度(h)Etch height (h)	线宽(w)Line width (w)
红(Red) Red	400400	4040	300300
绿(Green)Green	330330	4040	247.5247.5
蓝(Blue)Blue	250250	4040	187.5187.5

FIG. 7 shows a top view of a metal grating provided by an embodiment of the present disclosure. The meaning of the grating period p and the line width w in the above table can be referred to FIG. 7. The grating period from the largest to the smallest corresponds to the red filter region R, the green filter region G, and the blue filter region B in order.

FIG. 8 shows a transmitted light spectrum of a color filter provided by an embodiment of the present disclosure. The spectra of red (Red), green (green) and blue (Blue) transmitted light obtained by color filtering using the geometric parameters shown in the above table are shown in Fig. 8. When the grating period of the metal grating is 250 nm and the etching height is 40 nm, that is, the silver metal layer is completely etched, and the metal line width is 187.5 nm, blue transmitted light mainly distributed in the range of 420-500 nm can be obtained, and the half peak thereof is obtained. The width is about 50 nm and the transmittance is about 54%. The principle of green and red is also the same as the blue light emission. Based on the grating periods of 330 nm and 400 nm, the green transmitted light and the red transmitted light are distributed in the range of 520-580 nm and 600-720 nm, respectively, and the half width is about 30 nm. The transmittances were 85% and 90%, respectively (as shown in Figure 8).

It should be understood that the geometric parameters are not precisely required in the actual application as shown in the above table, and the wavelength of the light emitted can be adjusted according to actual needs, which is not limited herein. In addition, for each of the parameters of the metal photogate planar optical waveguide in the color filter described above, the setting is optimized based on the above materials and the premise of realizing red, green and blue light output, for other materials. Metal gratings and planar optical waveguides, the above parameters also need to be recalculated and optimized. In addition, based on the same inventive concept, the filtering of other colors such as yellow, cyan, and magenta can be realized by changing the parameters of the metal grating and the planar optical waveguide, and details are not described herein again.

In addition, the metal grating provided by the embodiment of the present disclosure may be made of nano silver, and other metal materials such as metal aluminum may also be used. The parameters of the above metal grating and/or planar optical waveguide may require redesign optimization after replacement of other metallic materials. The above metal grating provided by the embodiment of the present disclosure can be fabricated by nanoimprinting and etching. For example, three kinds of grating structures corresponding to different colors of transmitted light are designed on the mask, and the pattern of the metal grating is embossed on the photoresist such as the surface of the silver film by nanoimprinting, and then dry etching is performed ( The exposed silver film is etched away by wet solution etching (such as concentrated nitric acid) or by wet etching (after concentrated nitric acid), and after stripping the photoresist, a grating structure having a desired grating period distribution can be obtained.

It should be noted that since the light wave is a transverse wave, for the transverse wave, the vibration direction of the wave has no symmetry to the direction of propagation, and the asymmetry of the vibration side of the wave with respect to the direction of propagation is called polarization, which is the difference between the transverse wave and the longitudinal wave. One of the most obvious signs is that only the transverse wave has polarization. In the above metal grating provided by the embodiment of the present disclosure, the vibration direction of the light wave can sense the change of the refractive index along the vibration component (e light) in the x-axis direction as shown in FIG. 7, and the vibration direction vibrates along the y-axis direction. The component (o light) does not perceive the change in the refractive index, so the transmitted light passing through the metal grating is polarized light (e light).

Based on the same inventive concept, an embodiment of the present disclosure further provides a display panel, including any of the above color filters, which may be any form of display panel that adopts a backlight combined with a color filter illumination mode, for example, The display panel may be a liquid crystal display panel, an organic light emitting display panel, a color light emitting diode display panel, or the like.

When the above display panel provided by the embodiment of the present disclosure is an organic light emitting display panel (ie, an OLED display panel), the bottom emission type organic light emitting display panel and the top emission type organic light emitting display panel are included.

FIG. 9 is a schematic structural diagram of a bottom emission type organic light emitting display panel according to an embodiment of the present disclosure. As shown in FIG. 9, the bottom emission type organic light emitting display panel includes a substrate substrate 41, an anode 42 disposed on the substrate substrate 41, a color filter 43, a white organic light-emitting layer 44, and a cathode 45. In addition, the bottom emission type organic light emitting display panel may further include: a hole transport layer 46 between the anode 42 and the color filter 43, and an electron transport layer 47 between the white organic light emitting layer 44 and the cathode 45.

FIG. 10 is a schematic structural diagram of a top emission type organic light emitting display panel according to an embodiment of the present disclosure. As shown in Fig. 10, a top emission type organic light emitting display panel includes a substrate substrate 41, an anode 42 disposed on the substrate substrate 41, a white organic light-emitting layer 44, a color filter 43, and a cathode 45. In addition, the bottom emission type organic light emitting display panel may further include a hole transport layer 46 between the anode 42 and the white organic light emitting layer 44, and an electron transport layer 47 between the color filter 43 and the cathode 45.

In addition, when the display panel is a liquid crystal display panel, the color filter can be used as a color film layer in the color filter substrate and disposed opposite to the array substrate.

Embodiments of the present disclosure also provide a display device including any of the above display panels. The display device can be a display device such as an OLED panel, an OLED display, an OLED TV or an electronic paper, or can be any product or component having a display function such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigation device, and the like. , such as mobile devices such as smart phones.

In summary, the color filter, the display panel, and the display device provided by the embodiment of the present disclosure, wherein the color filter includes a plurality of filter regions of different colors, the color filter further includes: a metal grating, The grating grating has different grating periods in the filter regions of different colors; the planar optical waveguide includes a buffer layer, a waveguide layer and a substrate, the metal grating, the buffer layer, the waveguide layer and The substrate is sequentially disposed along an exit direction of the light, and a refractive index of the waveguide layer is greater than a refractive index of the buffer layer and a refractive index of the substrate. The metal grating in the embodiment of the present disclosure can realize the filtering effect of different colors by changing the grating period, and the planar optical waveguide can perform secondary filtering on the filtered different colors of light, so that the spectrum half-width of each color light is narrowed. The color purity is improved, and thus the embodiment of the present disclosure can increase the color saturation of each color, thereby improving the contrast of the color display thereof upon display.

Although the exemplary embodiments of the present disclosure have been described, those skilled in the art can make further changes and modifications to these embodiments once they are aware of the basic inventive concept. Therefore, it is intended that the appended claims be interpreted as

It will be apparent to those skilled in the art that various changes and modifications can be made in the present disclosure without departing from the spirit and scope of the disclosure. Thus, it is intended that the present invention cover the modifications and the modifications

Claims

A color filter comprising a plurality of filter regions of different colors, wherein the color filter comprises:

a metal grating having different grating periods in the filter regions of different colors;

a planar optical waveguide comprising a buffer layer, a waveguide layer and a substrate, wherein the metal grating, the buffer layer, the waveguide layer and the substrate are sequentially disposed along an outgoing direction of light, and the refractive index of the waveguide layer The rate is greater than the refractive index of the buffer layer and the refractive index of the substrate.
The color filter according to claim 1, wherein said metal grating is formed on a surface of said buffer layer on a side away from said waveguide layer.
The color filter according to claim 1, wherein a refractive index of said buffer layer is equal to a refractive index of said substrate.
The color filter according to claim 1, wherein said buffer layer has a thickness of 50 to 100 nm, and said waveguide layer has a thickness of 100 nm.
The color filter according to any one of claims 1 to 4, wherein a grating period of the metal grating in the filter region of any color is the same value, and the plurality of different color filters The area includes a red filter area, a green filter area, and a blue filter area;

a grating period of the metal grating in the red filter region is greater than a grating period in the green filter region, and a grating period of the metal grating in the green filter region is greater than in the blue filter The grating period in the light region.
The color filter according to claim 5, wherein a grating period of said metal grating in said red filter region is 370-430 nm, and a grating period of said metal grating in said green filter region For 310-360 nm, the grating period of the metal grating in the blue filter region is 230-280 nm.
The color filter according to any one of claims 1 to 4, wherein the metal grating comprises a plurality of metal wires extending in the same direction.
The color filter according to any one of claims 1 to 4, wherein the material of the metal grating is nano silver, and the metal grating has a thickness of 40 nm.
The color filter according to any one of claims 1 to 4, wherein a duty ratio of the metal grating in each of the filter regions is 0.75, and a duty ratio of the metal grating is The ratio of the non-transmissive regions of the metal grating to the grating period.
A display panel, wherein the display panel comprises the color filter according to any one of claims 1-9.
The display panel of claim 10, wherein the display panel is a bottom emission type organic light emitting display panel;

The bottom emission type organic light emitting display panel includes a substrate, an anode, a color filter, a white organic light emitting layer, and a cathode which are sequentially disposed on the substrate.
The display panel of claim 10, wherein the display panel is a top emission type organic light emitting display panel;

The top emission type organic light emitting display panel comprises: a substrate, an anode, a white organic light emitting layer, the color filter and a cathode which are sequentially disposed on the substrate.
A display device, wherein the display device comprises the display panel according to any one of claims 10 to 12.