US-12628540-B2 - Organic light-emitting display panel and display apparatus

US12628540B2US 12628540 B2US12628540 B2US 12628540B2US-12628540-B2

Abstract

Embodiments of this application provide an organic light-emitting display panel and a display apparatus. A functional layer disposed on a first substrate in the organic light-emitting display panel includes an emissive layer and an optical filter layer. A pixel define layer is disposed between adjacent organic light-emitting units in the emissive layer. Black light-shielding blocks and color-blocking blocks in the optical filter layer are alternately arranged. The color-blocking blocks and the organic light-emitting units are disposed in a one-to-one correspondence manner. A region between adjacent black light-shielding blocks covers the organic light-emitting unit in a thickness direction of the organic light-emitting display panel. The pixel define layer is a black light-absorbing layer. The black light-shielding blocks and the color-blocking blocks in the organic light-emitting display panel and the display apparatus provided in embodiments of this application, may cooperate to reduce transmission of visible light from an external environment to an internal film layer of the organic light-emitting display panel, and allow light emitted by the organic light-emitting unit to pass through. Therefore, a reflectivity of the organic light-emitting display panel to external ambient light is reduced, and luminance of the organic light-emitting display panel is not reduced.

Inventors

Ming Zhu
Huan Ni
Feng Liao
Xia Zhang
Shenghe Luo

Assignees

HUAWEI TECHNOLOGIES CO., LTD.

Dates

Publication Date: 20260512
Application Date: 20230530
Priority Date: 20201130

Claims (20)

1 . An organic light-emitting display panel, comprising a first substrate, wherein a functional layer is disposed on the first substrate, and the functional layer comprises: an emissive layer, wherein the emissive layer comprises a plurality of organic light-emitting units and a pixel define layer, and the pixel define layer is disposed between adjacent organic light-emitting units; and an optical filter layer, wherein the optical filter layer is disposed on a side that is of the emissive layer and that is close to an out-light surface of the organic light-emitting display panel, the optical filter layer comprises a plurality of color-blocking blocks and a plurality of black light-shielding blocks, the black light-shielding blocks and the color-blocking blocks are alternately arranged, and the color-blocking blocks and the organic light-emitting units are disposed in a one-to-one correspondence manner, wherein a region between adjacent black light-shielding blocks covers the organic light-emitting unit in a thickness direction of the organic light-emitting display panel, and the pixel define layer is a black light-absorbing layer; and wherein the organic light-emitting display panel is further configured to perform light emission for display and collect a biometric feature image including iris information and facial information using an optical sensor for emitting or receiving infrared light.
2 . The organic light-emitting display panel according to claim 1 , wherein the pixel define layer and the black light-shielding blocks are infrared-transparent black light-absorbing layers.
3 . The organic light-emitting display panel according to claim 1 , further comprising: a drive circuit layer, wherein the drive circuit layer comprises a plurality of transistor structures; and a planarization layer, wherein the planarization layer is disposed between the drive circuit layer and the emissive layer, and the planarization layer is a black light-absorbing layer.
4 . The organic light-emitting display panel according to claim 3 , wherein the planarization layer is an infrared-transparent black light-absorbing layer.
5 . The organic light-emitting display panel according to claim 1 , wherein the pixel define layer under the black light-shielding blocks is a discontinuous structure in the thickness direction of the organic light-emitting display panel.
6 . The organic light-emitting display panel according to claim 1 , wherein in a plane perpendicular to the thickness direction of the organic light-emitting display panel, a minimum distance between an edge of the organic light-emitting unit and an edge of the corresponding region between adjacent black light-shielding blocks is a first distance, and the first distance is greater than 0.5 μm.
7 . The organic light-emitting display panel according to claim 6 , wherein the plurality of organic light-emitting units comprise a green organic light-emitting unit, a blue organic light-emitting unit, and a red organic light-emitting unit; and the first distance corresponding to the green organic light-emitting unit is 3 μm, the first distance corresponding to the blue organic light-emitting unit is 1.5 μm, and the first distance corresponding to the red organic light-emitting unit is 5 μm.
8 . The organic light-emitting display panel according to claim 1 , wherein the plurality of organic light-emitting units comprise a green organic light-emitting unit, a blue organic light-emitting unit, and a red organic light-emitting unit: the plurality of color-blocking blocks comprise a green color-blocking block, a blue color-blocking block, and a red color-blocking block; and the green organic light-emitting unit is disposed in a correspondence with the green color-blocking block, the blue organic light-emitting unit is disposed in a correspondence with the blue color-blocking block, and the red organic light-emitting unit is disposed in a correspondence with the red color-blocking block; and a full width at half maximum of an optical spectrum of the green color-blocking block is less than or equal to 70 nm, a full width at half maximum of an optical spectrum of the blue color-blocking block is greater than or equal to 60 nm and less than or equal to 100 nm, and a full width at half maximum corresponding to a short wavelength of an optical spectrum of the red color-blocking block is less than or equal to 25 nm.
9 . The organic light-emitting display panel according to claim 1 , further comprising an encapsulation layer, a first planarization layer, a second planarization layer, and a coating planarization layer: wherein the encapsulation layer is disposed between the emissive layer and the first planarization layer, and comprises a first inorganic insulation layer, an organic insulation layer, and a second inorganic insulation layer: the organic insulation layer is disposed between the first inorganic insulation layer and the second inorganic insulation layer; and the second inorganic insulation layer is disposed on a side that is of the organic insulation layer and that is close to the first planarization layer; at least one of the color-blocking block and the black light-shielding block is located between the first planarization layer and the second planarization layer, and the second planarization layer is disposed on a side that is of the first planarization layer and that is close to the coating planarization layer; and a refractive index of the second inorganic insulation layer, a refractive index of the first planarization layer, a refractive index of the second planarization layer, and a refractive index of the coating planarization layer sequentially decrease.
10 . The organic light-emitting display panel according to claim 9 , wherein the refractive index of the second inorganic insulation layer is 1.8, the refractive index of the first planarization layer is 1.62, the refractive index of the second planarization layer is 1.55, and the refractive index of the coating planarization layer is 1.52.
11 . A display apparatus, comprising an organic light-emitting display panel, wherein the organic light-emitting display panel comprises a first substrate, wherein a functional layer is disposed on the first substrate, and the functional layer comprises: an emissive laver, wherein the emissive layer comprises a plurality of organic light-emitting units and a pixel define layer, and the pixel define layer is disposed between adjacent organic light-emitting units; and an optical filter layer, wherein the optical filter layer is disposed on a side that is of the emissive layer and that is close to an out-light surface of the organic light-emitting display panel, the optical filter layer comprises a plurality of color-blocking blocks and a plurality of black light-shielding blocks, the black light-shielding blocks and the color-blocking blocks are alternately arranged, and the color-blocking blocks and the organic light-emitting units are disposed in a one-to-one correspondence manner, wherein a region between adjacent black light-shielding blocks covers the organic light-emitting unit in a thickness direction of the organic light-emitting display panel, and the pixel define layer is a black light-absorbing layer; and wherein the organic light-emitting display panel is further configured to perform light emission for display and collect a biometric feature image including iris information and facial information using an optical sensor for emitting or receiving infrared light.
12 . The display apparatus according to claim 11 , wherein the pixel define layer and the black light-shielding blocks are infrared-transparent black light-absorbing layers.
13 . The display apparatus according to claim 11 , wherein the organic light-emitting display panel further comprises: a drive circuit layer, wherein the drive circuit layer comprises a plurality of transistor structures; and a planarization layer, wherein the planarization layer is disposed between the drive circuit layer and the emissive layer, and the planarization layer is a black light-absorbing layer.
14 . The display apparatus according to claim 13 , wherein the planarization layer is an infrared-transparent black light-absorbing layer.
15 . The display apparatus according to claim 11 , wherein the pixel define layer under the black light-shielding blocks is a discontinuous structure in the thickness direction of the organic light-emitting display panel.
16 . The display apparatus according to claim 11 , wherein in a plane perpendicular to the thickness direction of the organic light-emitting display panel, a minimum distance between an edge of the organic light-emitting unit and an edge of the corresponding region between adjacent black light-shielding blocks is a first distance, and the first distance is greater than 0.5 μm.
17 . The display apparatus according to claim 16 , wherein the plurality of organic light-emitting units comprise a green organic light-emitting unit, a blue organic light-emitting unit, and a red organic light-emitting unit; and the first distance corresponding to the green organic light-emitting unit is 3 μm, the first distance corresponding to the blue organic light-emitting unit is 1.5 μm, and the first distance corresponding to the red organic light-emitting unit is 5 μm.
18 . The display apparatus according to claim 11 , wherein the plurality of organic light-emitting units comprise a green organic light-emitting unit, a blue organic light-emitting unit, and a red organic light-emitting unit: the plurality of color-blocking blocks comprise a green color-blocking block, a blue color-blocking block, and a red color-blocking block; and the green organic light-emitting unit is disposed in a correspondence with the green color-blocking block, the blue organic light-emitting unit is disposed in a correspondence with the blue color-blocking block, and the red organic light-emitting unit is disposed in a correspondence with the red color-blocking block; and a full width at half maximum of an optical spectrum of the green color-blocking block is less than or equal to 70 nm, a full width at half maximum of an optical spectrum of the blue color-blocking block is greater than or equal to 60 nm and less than or equal to 100 nm, and a full width at half maximum corresponding to a short wavelength of an optical spectrum of the red color-blocking block is less than or equal to 25 nm.
19 . The display apparatus according to claim 11 , wherein the organic light-emitting display panel further comprises an encapsulation layer, a first planarization layer, a second planarization layer, and a coating planarization layer: the encapsulation layer is disposed between the emissive layer and the first planarization layer, and comprises a first inorganic insulation layer, an organic insulation layer, and a second inorganic insulation layer: the organic insulation layer is disposed between the first inorganic insulation layer and the second inorganic insulation layer; and the second inorganic insulation layer is disposed on a side that is of the organic insulation layer and that is close to the first planarization layer; at least one of the color-blocking block and the black light-shielding block is located between the first planarization layer and the second planarization layer, and the second planarization layer is disposed on a side that is of the first planarization layer and that is close to the coating planarization layer; and a refractive index of the second inorganic insulation layer, a refractive index of the first planarization layer, a refractive index of the second planarization layer, and a refractive index of the coating planarization layer sequentially decrease.
20 . The display apparatus according to claim 19 , wherein the refractive index of the second inorganic insulation layer is 1.8, the refractive index of the first planarization layer is 1.62, the refractive index of the second planarization layer is 1.55, and the refractive index of the coating planarization layer is 1.52.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of International Application No. PCT/CN2021/122585, filed on Oct. 8, 2021, which claims priority to Chinese Patent Application No. 202011380685.9, filed on Nov. 30, 2020. The disclosures of the aforementioned applications are hereby incorporated by reference in their entireties. TECHNICAL FIELD This application relates to the field of display technologies, and in particular, to an organic light-emitting display panel and a display apparatus. BACKGROUND Organic light-emitting displays are increasingly widely used in fields such as mobile communications and wearable products, so that research on the organic light-emitting displays becomes a hot topic. The organic light-emitting display includes laminated electrode layers such as a metal layer. Therefore, if the organic light-emitting display is directly exposed to ambient light, strong reflection of the ambient light on the electrode layers such as the metal layer causes a decrease in a contrast of the organic light-emitting display, and even causes a failure in observing a displayed image. In the conventional technologies, to resolve an impact of the light reflection on the contrast of the organic light-emitting display, a polarizer is disposed on an out-light surface of the organic light-emitting display. Because the polarizer can absorb light in one polarization direction and allow light in only another polarization direction to pass through, the polarizer can prevent a part of the ambient light from being transmitted to an internal film layer of the organic light-emitting display, thereby implementing effect of reducing reflected light. However, the polarizer disposed on the out-light surface of the organic light-emitting display not only absorbs the ambient light, but also absorbs light that is emitted by a light-emitting device in the organic light-emitting display and that is used for display. As a result, luminous efficacy of the organic light-emitting display is reduced, and consequently, luminance of the organic light-emitting display is reduced, or a service life of the light-emitting device in the organic light-emitting display is shortened. SUMMARY This application provides an organic light-emitting display panel and a display apparatus, to resolve the foregoing problems. According to a first aspect, this application provides an organic light-emitting display panel, including a first substrate. A functional layer is disposed on the first substrate. The functional layer includes an emissive layer and an optical filter layer. The optical filter layer is disposed on a side that is of the emissive layer and that is close to an out-light surface of the organic light-emitting display panel. The emissive layer includes a plurality of organic light-emitting units and a pixel define layer. The pixel define layer is disposed between adjacent organic light-emitting units. The optical filter layer includes a plurality of color-blocking blocks and a plurality of black light-shielding blocks. The black light-shielding blocks and the color-blocking blocks are alternately arranged. The color-blocking blocks and the organic light-emitting units are disposed in a one-to-one correspondence manner. A region between disposed adjacent black light-shielding blocks covers the organic light-emitting unit in a thickness direction of the organic light-emitting display panel. The pixel define layer is a black light-absorbing layer. In the organic light-emitting display panel provided in this embodiment of this application, the black light-shielding blocks are disposed above the organic light-emitting layer, and the color-blocking blocks are disposed above the organic light-emitting units. In this way, the black light-shielding blocks and the color-blocking blocks may cooperate to allow transmission of only visible light with a specified wavelength from an external environment to an internal film layer of the organic light-emitting display panel, that is, to reduce transmission of visible light from the external environment to the internal film layer of the organic light-emitting display panel. Therefore, a reflectivity of the organic light-emitting display panel to external ambient light is reduced, and a contrast of the organic light-emitting display panel is improved. In addition, because the color-blocking blocks are used to filter the external ambient light, and the color-blocking block may allow light emitted by a corresponding organic light-emitting unit to pass through, luminance of the organic light-emitting display panel is not reduced. In an implementation of the first aspect, the pixel define layer and the black light-shielding blocks are infrared-transparent black light-absorbing layers. The pixel define layer and the black light-shielding blocks are disposed as the infrared-transparent black light-absorbing layer, so that the visible light from the external environment can be prevented f