CN112310305A - Display module and display device - Google Patents
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- CN112310305A CN112310305A CN202011118543.5A CN202011118543A CN112310305A CN 112310305 A CN112310305 A CN 112310305A CN 202011118543 A CN202011118543 A CN 202011118543A CN 112310305 A CN112310305 A CN 112310305A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/40—OLEDs integrated with touch screens
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/50—OLEDs integrated with light modulating elements, e.g. with electrochromic elements, photochromic elements or liquid crystal elements
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Abstract
The application provides a display module and a display device, wherein the display module comprises a light path adjusting area which is overlapped with at least one of a display area and a non-display area; the refractive index set of the film layer in the light path adjusting area is a first refractive index set, the refractive index set of the film layer in the area except the light path adjusting area in the display area is a second refractive index set, and the refractive index set of the film layer in the area except the light path adjusting area in the non-display area is a third refractive index set. This application makes this first refractive index set and this second refractive index set or this third refractive index set in at least one difference to and utilize first refractive index set to adjust the refracting index of rete in the light path adjustment district, make the light that the product produced lead to the light-emitting side through the refraction, avoided light to derive from the product side, improved the luminous efficacy of product.
Description
Technical Field
The application relates to the field of display, in particular to a display module and a display device.
Background
In the flat panel display technology, an Organic Light-Emitting Diode (OLED) display has many advantages of being Light and thin, Emitting Light actively, fast in response speed, large in visible angle, wide in color gamut, high in brightness, low in power consumption, and the like, and is gradually becoming a third generation display technology following the liquid crystal display.
In the existing OLED display panel, in order to ensure the light emitting efficiency of the material, the materials above the light emitting layer in the display panel are all transparent materials, and different materials correspond to different refractive indexes and reflectivity, so that light emitted by the light emitting layer is emitted from the edge of the panel, the light leakage at the edge of the panel is caused, and the light emitting efficiency of the product is reduced.
Therefore, a display module is needed to solve the above technical problems.
Disclosure of Invention
The application provides a display module assembly and a display device to solve the technical problem that an existing OLED display panel is low in luminous efficiency.
In order to solve the above problems, the technical solution provided by the present application is as follows:
the application provides a display module, which comprises a display area and a non-display area positioned on the periphery of the display area, wherein the display module further comprises a light path adjusting area which has an overlapping part with at least one of the display area or the non-display area;
the refractive index set of the film layer in the light path adjusting area is a first refractive index set, the refractive index set of the film layer in the area except the light path adjusting area in the display area is a second refractive index set, and the refractive index set of the film layer in the area except the light path adjusting area in the non-display area is a third refractive index set.
In the display module assembly of this application, in the light-emitting direction of display module assembly, the refracting index that the rete in the light path adjustment district set up with first refracting index set increases gradually.
In the display module of the present application, the optical path adjustment region includes a first overlapping portion overlapping with the display region, and the first overlapping portion covers at most three sub-pixels in the display region.
In the display module of the present application, the light path adjustment region further includes a second overlapping portion overlapping with the non-display region, and an area of the second overlapping portion is larger than an area of the first overlapping portion.
In the display module of the present application, in the optical path adjustment region, a minimum difference in refractive index between two adjacent film layers in the second overlapping portion is larger than a minimum difference in refractive index between two adjacent film layers in the first overlapping portion.
In the display module assembly of this application, the display area to on the direction of non-display area, the minimum difference of the refracting index between two adjacent rete gradually increases.
In the display module of the present application, the first set of refractive indices is equal to the third set of refractive indices.
In the display module assembly of this application, display module assembly includes display panel, is located touch-control layer on the display panel, be located polarizer layer on the touch-control layer and being located apron layer on the polarizer layer, the light path adjustment is distinguished the touch-control layer polarizer layer the refracting index of apron layer increases gradually.
In the display module, at least one first light emitting layer is arranged in the light path adjusting area, and the refractive index of the first light emitting layer is larger than that of the film layers on two adjacent sides.
The application also provides a display device, wherein, display device includes above-mentioned display module assembly and is used for holding display module assembly's casing.
Has the advantages that: this application is through making first refractive index set with second refractive index set or at least one of the third refractive index set is different to and utilize first refractive index set to adjust the refracting index of rete in the light path adjustment district, make the light that the product produced lead to the light-emitting side through the refraction, avoided light to derive from the product side, improved the luminous efficacy of product.
Drawings
The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.
FIG. 1 is a first structural diagram of a display module according to the present application;
FIG. 2 is a second structural diagram of a display module according to the present application;
FIG. 3 is a first schematic view of the light transmission within the light path adjustment region of the display module of the present application;
FIG. 4 is a second schematic view of the light transmission in the light path adjustment region of the display module of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the existing OLED display panel, in order to ensure the light emitting efficiency of the material, the materials above the light emitting layer in the display panel are all transparent materials, and different materials correspond to different refractive indexes and reflectivity, so that light emitted by the light emitting layer is emitted from the edge of the panel, the light leakage at the edge of the panel is caused, and the light emitting efficiency of the product is reduced.
Referring to fig. 1 to 4, the present application provides a display module 100, including a display area 200 and a non-display area 300 located at a periphery of the display area 200, wherein the display module 100 further includes a light path adjusting area 400 having an overlapping portion with at least one of the display area 200 or the non-display area 300.
The refractive index set of the film layer in the optical path adjustment region 400 is a first refractive index set, the refractive index set of the film layer in the region of the display region 200 other than the optical path adjustment region 400 is a second refractive index set, and the refractive index set of the film layer in the region of the non-display region 300 other than the optical path adjustment region 200 is a third refractive index set.
This application is through making first refractive index set with second refractive index set or at least one of the third refractive index set is different to and utilize first refractive index set to adjust the refracting index of rete in the light path adjustment district 400, make the light that the product produced lead to the light-emitting side through the refraction, avoided light to derive from the product side, improved the luminous efficacy of product.
The technical solution of the present application will now be described with reference to specific embodiments.
Referring to fig. 1, the display module 100 may include a display panel 10, a touch layer 20 on the display panel 10, a polarizer layer 30 on the touch layer 20, and a cover plate layer 40 on the polarizer layer 30.
In this embodiment, the refractive indexes of the touch layer 20, the polarizer layer 30, and the cover plate layer 40 in the optical path adjustment region 400 gradually increase.
In this embodiment, the display panel 10 may be an LCD display panel 10 or an OLED display panel 10, and the present application is not particularly limited thereto, and the OLED display panel 10 is taken as an example for description.
In this embodiment, the display panel 10 may include a substrate 11, a driving circuit layer 12 on the substrate 11, a light emitting device layer 13 on the driving circuit layer 12, and a thin film encapsulation layer 14 on the light emitting device layer 13.
In this embodiment, the material of the substrate 11 may be determined according to the rigidity and flexibility of the product, such as glass, quartz, or polyimide.
In the present embodiment, the driving circuit layer 12 includes a plurality of thin film transistors. The thin film transistor may be of an etch-stop type, a back channel etch type, or a top gate thin film transistor type, and the like, and is not particularly limited. The thin film transistor, for example, a bottom gate thin film transistor type, may include a gate electrode layer on the first substrate 11, a gate insulating layer on the gate electrode layer, an active layer on the gate insulating layer, a source drain electrode layer on the active layer, and a passivation layer on the source drain electrode layer. Since the above structures are all in the prior art, they are not described in detail here.
In this embodiment, the light emitting device layer 13 may include an anode layer, a light emitting layer on the anode layer, and a cathode layer on the light emitting layer.
In this embodiment, the thin film encapsulation layer 14 may include an inorganic layer and an organic layer stacked on each other, and the specific number of stacked inorganic layers and organic layers is not limited in this application.
In the display module 100 of the present application, in the light emitting direction of the display module 100, the refractive index of the film layer in the light path adjusting region 400 set up with the first refractive index set gradually increases.
In this embodiment, the first refractive index set, the second refractive index set, and the third refractive index set include refractive index values corresponding to film layers in the display module 100 one to one.
Referring to fig. 2 to 3, since light is emitted from the light emitting layer to the structure above the light emitting layer, the variation rule of the refractive index of the present application may only correspond to the film structure above the light emitting layer. For example, the refractive index of the film encapsulation layer 14 is a, the refractive index of the touch layer 20 is b, the refractive index of the polarizer layer 30 is c, the refractive index of the cover plate layer 40 is d, the first refractive index set is X (a1, b1, c1, d1), the second refractive index set is Y (a2, b2, c2, d2), and the third refractive index set is Z (a3, b3, c3, d 3).
In this embodiment, the second set of refractive indices is the same as the third set of refractive indices, i.e. (a2, b2, c2, d2) and (a3, b3, c3, d3) are equal in their corresponding values. The first set of refractive indices is different from the second set of refractive indices and the third set of refractive indices.
In the present embodiment, the values a1, b1, c1 and d1 gradually increase, for example, the first refractive index set is X (1.4, 1.5, 1.6 and 1.7), that is, the refractive index of the corresponding thin film encapsulation layer 14 in the optical path adjustment region 400 is 1.4, the refractive index of the touch layer 20 is 1.5, the refractive index of the polarizer layer 30 is 1.6, and the refractive index of the cover plate layer 40 is 1.7. When the light generated by the light emitting of the display panel 10 enters the touch layer 20 through the thin film encapsulation layer 14, the light is transmitted from the light-sparse medium to the light-dense medium and is refracted due to the difference between the refractive indexes of the light and the light, so that the emergence angle of the light is reduced. Similarly, the transmission of light from the touch layer 20 to the polarizer layer 30, and the transmission of light from the polarizer layer 30 to the cover layer 40 further reduces the light exit angle. Since the embodiment is described by taking the film encapsulation layer 14, the touch layer 20, the polarizer layer 30, and the cover plate layer 40 as an example, when the detailed structure in the above film layers is subjected to refractive index limitation, light emitted by the light emitting layer can be adjusted by the light path adjusting region 400, so that the exit angle of the light is close to the normal direction, thereby avoiding the technical problem that light emitted by the light emitting layer is led out from the side through a certain film layer, and the light leakage at the edge region is guided to the light exit side in the present application, thereby improving the light emitting efficiency of the product.
In this embodiment, in the same film layer of the display module 100, since the refractive index of the film layer in the optical path adjusting region 400 is different from that of other regions, the film layer structure in the optical path adjusting region 400 can be formed by different mask processes, for example, the film layer structure except the optical path adjusting region 400 is formed by a first mask plate, and then the film layer structure in the optical path adjusting region 400 is formed by a second mask plate. Alternatively, a full-film deposition may be performed and the film in the optical path adjustment region 400 may be filled with a material to change the refractive index of the region.
In this embodiment, the present application is not limited to the two process methods, as long as the refractive index change rules of different regions are different.
In the display module 100 of the present application, the optical path adjusting region 400 includes a first overlapping portion 410 overlapping with the display region 200, and the first overlapping portion 410 covers at most three sub-pixels in the display region 200.
Referring to fig. 2, the light path adjusting region 400 spans the display region 200 and the non-display region 300 of the display module 100. Since light leakage from the light source generally occurs in the edge region of the display panel 10, the light source is adjusted before side light leakage from the light source by disposing a portion of the light path adjusting region 400 in the display region 200. However, since the adjustment of the refractive index may cause the light emitted from the display area 200 to be refracted and then to be abnormally deflected, the portion of the optical path adjustment area 400 covering the display area 200 cannot be too large, and the application defines that the first overlapping portion 410 covers at most three sub-pixels in the display area 200.
In the display module 100 of the present application, the light path adjusting region 400 further includes a second overlapping portion 420 overlapping with the non-display region 300, and an area of the second overlapping portion 420 is larger than an area of the first overlapping portion 410.
Referring to fig. 2, since the first refractive index set corresponds to the refractive index of the film layer, the light in the display area 200 is refracted and deflected, so that the display image is abnormal, most of the area of the optical path adjusting area 400 is disposed in the non-display area 300.
In this embodiment, the first refractive index set may be the same as the third refractive index set, that is, the refractive index distribution of the film layer in the entire non-display area 300 is the same as the refractive index distribution of the film layer in the optical path adjusting area 400. Because the non-display area 300 is generally provided with the light-shielding material, the refractive index change rule of the film layer in the non-display area 300 is the same as the refractive index change rule of the film layer in the light path adjusting area 400, that is, the refractive index corresponding to the film layer in the non-display area 300 is gradually reduced in the light-emitting direction, so that the light leakage occurring from the side edge can be ensured to be absorbed by the light-shielding material in the non-display area 300 after being refracted in the non-display area 300, and the technical problem of side light leakage of the product is solved.
In the display module 100 of the present application, in the optical path adjusting region 400, a minimum difference in refractive index between two adjacent film layers in the second overlapping portion 420 is greater than a minimum difference in refractive index between two adjacent film layers in the first overlapping portion 410.
In the present embodiment, the smaller the difference between the refractive indexes of the two adjacent film layers, the smaller the deflection phenomenon of the light in the display area 200. Therefore, in order to ensure that the light emitted by the sub-pixels in the display area 200 is sufficiently less affected by the setting of the refractive index in the optical path adjusting area 400, the minimum difference of the refractive index between the two adjacent film layers on the side close to the display area 200 in the optical path adjusting area 400 is set smaller than the minimum difference of the refractive index between the two adjacent film layers on the side far from the display area 200. For example, the first set of refractive indices for the first overlapping portion 410 is X1(1.45, 1.5, 1.55, 1.6), and the first set of refractive indices for the second overlapping portion 420 is X2(1.4, 1.5, 1.6, 1.7).
In the above embodiments, the refractive index difference between two adjacent film layers may be equal or different, and the application is not particularly limited.
In the display module 100 of the present application, in the direction from the display area 200 to the non-display area 300, the minimum difference of the refractive indexes between two adjacent film layers gradually increases. For example, the first refractive index set corresponding to the first overlapping portion 410 is X1(1.45, 1.5, 1.55, 1.6), the first refractive index set corresponding to the region between the first overlapping portion 410 and the second overlapping portion 420 is X3(1.42, 1.5, 1.58, 1.66), and the first refractive index set corresponding to the second overlapping portion 420 is X2(1.4, 1.5, 1.6, 1.7).
In the display module 100 of the present application, at least one first light emitting layer is disposed in the light path adjusting region 400, and a refractive index of the first light emitting layer is greater than refractive indices of the adjacent two side film layers.
Referring to fig. 2, the optical path adjusting region 400 of the present application may further include a light exit region 430 close to the non-display region 300, where at least one first light exit layer is disposed in the light exit region 430, and the refractive index of the first light exit layer is increased and the refractive index of a film layer of the first light exit layer close to the light exit side is decreased, so that light is totally reflected inside the first light exit layer and is further led out from the edge of the first light exit side. For example, the first refractive index set corresponding to the light emergent region 430 may be X (1.45, 1.5, 1.55, 1.5), which is equivalent to light emitted from the polarizer layer 30, and the first light emergent layer in this embodiment is the polarizer layer 30, and please refer to fig. 4 for a specific light transmission diagram.
In this embodiment, the corresponding third refractive index set in the non-display area 300 may be the same as the first refractive index set corresponding to the light emergent area 430, that is, the non-display area 300 is entirely set to have a refractive index distribution for guiding out light.
In the above embodiment of the present application, optimization is performed on the problem of solving the side light leakage of the product, in order to avoid complete side light leakage of the product, the light-emitting area 430 is provided in the light path adjusting area 400, so as to lead out light not led out from the display area 200 or light not absorbed by the light-shielding material in the non-display area 300 from the first light-emitting layer of the product, and set a corresponding optical module, such as a fingerprint recognition or a breathing lamp, at the side of the product, so as to further utilize the side light leakage, thereby improving the utilization rate of the light source of the product.
In this embodiment, since the thin film encapsulation layer 14 is located on the light emitting layer, in order to ensure that the light at the edge is guided to the light emitting side, the refractive index of the thin film encapsulation layer 14 in the light path adjustment region 400 is smaller than the refractive index of the touch layer 20; the refractive index of the inorganic layer and the organic layer stacked in the above-mentioned manner may gradually increase, and the refractive index difference between the adjacent film layers is not specifically limited in this application.
In the above embodiment, in the optical path adjusting region 400, the refractive index of any one of the film layers is positively correlated to the thickness thereof. When the thickness of a certain film layer is larger, the corresponding refractive index is larger, namely, when light enters the film layer, the larger refractive index corresponds to a smaller emergence angle, the offset distance of the light to the edge is smaller, and the technical problem that the light is led out from the edge is further avoided.
The application also provides a display device, wherein, display device includes above-mentioned display module assembly and is used for holding display module assembly's casing. The working principle of the display device can refer to the display panel, and details are not repeated here.
The application provides a display module and a display device, wherein the display module comprises a light path adjusting area which is overlapped with at least one of a display area and a non-display area; the refractive index set of the film layer in the light path adjusting area is a first refractive index set, the refractive index set of the film layer in the area except the light path adjusting area in the display area is a second refractive index set, and the refractive index set of the film layer in the area except the light path adjusting area in the non-display area is a third refractive index set. This application is through making first refractive index set with second refractive index set or at least one of the third refractive index set is different to and utilize first refractive index set to adjust the refracting index of rete in the light path adjustment district, make the light that the product produced lead to the light-emitting side through the refraction, avoided light to derive from the product side, improved the luminous efficacy of product.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
The display panel and the display device provided by the embodiments of the present application are described in detail above, and the principle and the implementation of the present application are explained in the present application by applying specific examples, and the description of the embodiments above is only used to help understanding the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.
Claims (10)
1. A display module comprises a display area and a non-display area positioned at the periphery of the display area, and is characterized in that the display module also comprises a light path adjusting area which has an overlapping part with at least one of the display area or the non-display area;
the set of refractive index of rete in the light path adjustment region is first refractive index set, the set of refractive index of rete in the region except that the light path adjustment region in the display area is the second refractive index set, the set of refractive index of rete in the region except that the light path adjustment region in the non-display area is the third refractive index set, first refractive index set with second refractive index set or at least one in the third refractive index set is different.
2. The display module according to claim 1, wherein the refractive index of the film layer disposed with the first refractive index set in the optical path adjusting region gradually increases in a light emitting direction of the display module.
3. The display module of claim 1, wherein the optical path adjustment region comprises a first overlapping portion overlapping the display region, the first overlapping portion covering at most three sub-pixels within the display region.
4. The display module according to claim 3, wherein the optical path adjustment region further comprises a second overlapping portion overlapping with the non-display region, and an area of the second overlapping portion is larger than an area of the first overlapping portion.
5. The display module according to claim 4, wherein in the optical path adjustment region, a minimum difference in refractive index between two adjacent film layers in the second overlapping portion is larger than a minimum difference in refractive index between two adjacent film layers in the first overlapping portion.
6. The display module according to claim 4, wherein the minimum difference of the refractive indexes between two adjacent film layers gradually increases in the direction from the display area to the non-display area.
7. The display module of claim 2, wherein the first set of refractive indices is equal to the third set of refractive indices.
8. The display module according to claim 2, wherein the display module comprises a display panel, a touch layer on the display panel, a polarizer layer on the touch layer, and a cover plate layer on the polarizer layer, and the refractive indexes of the touch layer, the polarizer layer, and the cover plate layer in the optical path adjustment region gradually increase.
9. The display module according to claim 1, wherein at least one first light-emitting layer is disposed in the light path adjusting region, and a refractive index of the first light-emitting layer is greater than a refractive index of the adjacent two side film layers.
10. A display device, comprising the display module set according to any one of claims 1 to 9, and a housing for accommodating the display module set.
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| CN115020610A (en) * | 2022-06-07 | 2022-09-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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| CN113471388A (en) * | 2021-06-30 | 2021-10-01 | 武汉天马微电子有限公司 | Display module and display device |
| CN113629209A (en) * | 2021-07-26 | 2021-11-09 | 武汉华星光电半导体显示技术有限公司 | Display panel and mobile terminal |
| CN114025034A (en) * | 2021-10-29 | 2022-02-08 | 武汉华星光电半导体显示技术有限公司 | Display module |
| CN114025034B (en) * | 2021-10-29 | 2023-11-28 | 武汉华星光电半导体显示技术有限公司 | display module |
| CN115020610A (en) * | 2022-06-07 | 2022-09-06 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
| CN115020610B (en) * | 2022-06-07 | 2023-10-31 | 武汉华星光电半导体显示技术有限公司 | Display panel and display device |
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| CN112310305B (en) | 2022-05-27 |
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